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22000000000 = 2105911
BaseRepresentation
bin10100011111010011…
…010101110000000000
32002210012212210110211
4110133103111300000
5330024000000000
614035012203504
71406115625456
oct243723256000
962705783424
1022000000000
11936a476690
12431b909594
1320c7b51ca4
1410c9b809d6
1588b62d7ba
hex51f4d5c00

22000000000 has 220 divisors, whose sum is σ = 59970696984. Its totient is φ = 8000000000.

The previous prime is 21999999977. The next prime is 22000000007. The reversal of 22000000000 is 22.

It is a tau number, because it is divible by the number of its divisors (220).

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000000007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1999999995 + ... + 2000000005.

Almost surely, 222000000000 is an apocalyptic number.

22000000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29985348492).

22000000000 is an abundant number, since it is smaller than the sum of its proper divisors (37970696984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22000000000 is an frugal number, since it uses more digits than its factorization.

22000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 4.

Adding to 22000000000 its reverse (22), we get a palindrome (22000000022).

22000000000 divided by its reverse (22) gives a 9-th power (1000000000 = 109).

It can be divided in two parts, 2 and 2000000000, that added together give a palindrome (2000000002).

The spelling of 22000000000 in words is "twenty-two billion", and thus it is an aban number and an uban number.