22101000000 has 392 divisors, whose sum is σ = 75008414880. Its totient is φ = 5740800000.

The previous prime is 22100999969. The next prime is 22101000007. The reversal of 22101000000 is 10122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101000007) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 158999931 + ... + 159000069.

Almost surely, 2^22101000000 is an apocalyptic number.

22101000000 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 22101000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37504207440).

22101000000 is an abundant number, since it is smaller than the sum of its proper divisors (52907414880).

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

22101000000 is an frugal number, since it uses more digits than its factorization.

22101000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 22101000000 its reverse (10122), we get a palindrome (22101010122).

The spelling of 22101000000 in words is "twenty-two billion, one hundred one million", and thus it is an aban number.