21100101232 has 40 divisors (see below), whose sum is σ = 46871001056. Its totient is φ = 9013994496.

The previous prime is 21100101229. The next prime is 21100101263. The reversal of 21100101232 is 23210100112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265893 + ... + 336004.

Almost surely, 2^21100101232 is an apocalyptic number.

It is an amenable number.

21100101232 is an abundant number, since it is smaller than the sum of its proper divisors (25770899824).

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

21100101232 is a wasteful number, since it uses less digits than its factorization.

21100101232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602225 (or 602219 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21100101232 its reverse (23210100112), we get a palindrome (44310201344).

The spelling of 21100101232 in words is "twenty-one billion, one hundred million, one hundred one thousand, two hundred thirty-two".