22513043100 has 72 divisors (see below), whose sum is σ = 65257295488. Its totient is φ = 5992459200.

The previous prime is 22513043093. The next prime is 22513043129. The reversal of 22513043100 is 134031522.

It is a super-2 number, since 2×22513043100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95505 + ... + 232695.

Almost surely, 2^22513043100 is an apocalyptic number.

22513043100 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 22513043100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32628647744).

22513043100 is an abundant number, since it is smaller than the sum of its proper divisors (42744252388).

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

22513043100 is a wasteful number, since it uses less digits than its factorization.

22513043100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137755 (or 137748 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 22513043100 its reverse (134031522), we get a palindrome (22647074622).

The spelling of 22513043100 in words is "twenty-two billion, five hundred thirteen million, forty-three thousand, one hundred".