21163523153100 has 36 divisors (see below), whose sum is σ = 61233126990504. Its totient is φ = 5643606174080.

The previous prime is 21163523153077. The next prime is 21163523153159. The reversal of 21163523153100 is 135132536112.

It is a super-2 number, since 2×21163523153100² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35272538289 + ... + 35272538888.

Almost surely, 2^{21163523153100} is an apocalyptic number.

21163523153100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21163523153100 is an abundant number, since it is smaller than the sum of its proper divisors (40069603837404).

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

21163523153100 is a wasteful number, since it uses less digits than its factorization.

21163523153100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70545077194 (or 70545077187 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 21163523153100 its reverse (135132536112), we get a palindrome (21298655689212).

The spelling of 21163523153100 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred twenty-three million, one hundred fifty-three thousand, one hundred".