21233233100 has 36 divisors (see below), whose sum is σ = 46091247888. Its totient is φ = 8490504000.

The previous prime is 21233233057. The next prime is 21233233123. The reversal of 21233233100 is 133233212.

It is a super-2 number, since 2×21233233100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285830 + ... + 352370.

Almost surely, 2^21233233100 is an apocalyptic number.

21233233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233233100 is an abundant number, since it is smaller than the sum of its proper divisors (24858014788).

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

21233233100 is a wasteful number, since it uses less digits than its factorization.

21233233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69746 (or 69739 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21233233100 its reverse (133233212), we get a palindrome (21366466312).

The spelling of 21233233100 in words is "twenty-one billion, two hundred thirty-three million, two hundred thirty-three thousand, one hundred".