22452772100 has 144 divisors (see below), whose sum is σ = 56749242816. Its totient is φ = 7683596800.

The previous prime is 22452772057. The next prime is 22452772127. The reversal of 22452772100 is 127725422.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2257739 + ... + 2267661.

It is an arithmetic number, because the mean of its divisors is an integer number (394091964).

Almost surely, 2^22452772100 is an apocalyptic number.

22452772100 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 22452772100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28374621408).

22452772100 is an abundant number, since it is smaller than the sum of its proper divisors (34296470716).

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

22452772100 is a wasteful number, since it uses less digits than its factorization.

22452772100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9987 (or 9958 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The spelling of 22452772100 in words is "twenty-two billion, four hundred fifty-two million, seven hundred seventy-two thousand, one hundred".