22222201000 has 64 divisors (see below), whose sum is σ = 52032249360. Its totient is φ = 8883360000.

The previous prime is 22222200977. The next prime is 22222201007. The reversal of 22222201000 is 10222222.

It can be written as a sum of positive squares in 8 ways, for example, as 2207308324 + 20014892676 = 46982^2 + 141474^2 .

It is not an unprimeable number, because it can be changed into a prime (22222201007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1855030 + ... + 1866970.

Almost surely, 2^22222201000 is an apocalyptic number.

22222201000 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 22222201000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26016124680).

22222201000 is an abundant number, since it is smaller than the sum of its proper divisors (29810048360).

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

22222201000 is a wasteful number, since it uses less digits than its factorization.

22222201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13823 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22222201000 its reverse (10222222), we get a palindrome (22232423222).

The spelling of 22222201000 in words is "twenty-two billion, two hundred twenty-two million, two hundred one thousand".