21100202213232 has 20 divisors (see below), whose sum is σ = 54508855717640. Its totient is φ = 7033400737728.

The previous prime is 21100202213219. The next prime is 21100202213287. The reversal of 21100202213232 is 23231220200112.

It is a junction number, because it is equal to n+sod(n) for n = 21100202213199 and 21100202213208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219793773007 + ... + 219793773102.

It is an arithmetic number, because the mean of its divisors is an integer number (2725442785882).

Almost surely, 2^{21100202213232} is an apocalyptic number.

It is an amenable number.

21100202213232 is an abundant number, since it is smaller than the sum of its proper divisors (33408653504408).

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

21100202213232 is a wasteful number, since it uses less digits than its factorization.

21100202213232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439587546120 (or 439587546114 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21100202213232 its reverse (23231220200112), we get a palindrome (44331422413344).

The spelling of 21100202213232 in words is "twenty-one trillion, one hundred billion, two hundred two million, two hundred thirteen thousand, two hundred thirty-two".