21103200210320 has 40 divisors (see below), whose sum is σ = 49081936156224. Its totient is φ = 8438356098432.

The previous prime is 21103200210293. The next prime is 21103200210371. The reversal of 21103200210320 is 2301200230112.

It is a tau number, because it is divible by the number of its divisors (40).

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, 45454874 + ... + 45916793.

Almost surely, 2^{21103200210320} is an apocalyptic number.

21103200210320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103200210320 is an abundant number, since it is smaller than the sum of its proper divisors (27978735945904).

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

21103200210320 is a wasteful number, since it uses less digits than its factorization.

21103200210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91374567 (or 91374561 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103200210320 its reverse (2301200230112), we get a palindrome (23404400440432).

The spelling of 21103200210320 in words is "twenty-one trillion, one hundred three billion, two hundred million, two hundred ten thousand, three hundred twenty".