21000023313010 has 64 divisors (see below), whose sum is σ = 45079440924672. Its totient is φ = 6886791527616.

The previous prime is 21000023312971. The next prime is 21000023313011. The reversal of 21000023313010 is 1031332000012.

It is not an unprimeable number, because it can be changed into a prime (21000023313011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74736039 + ... + 75016501.

It is an arithmetic number, because the mean of its divisors is an integer number (704366264448).

Almost surely, 2^{21000023313010} is an apocalyptic number.

21000023313010 is an abundant number, since it is smaller than the sum of its proper divisors (24079417611662).

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

21000023313010 is a wasteful number, since it uses less digits than its factorization.

21000023313010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327007.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21000023313010 its reverse (1031332000012), we get a palindrome (22031355313022).

The spelling of 21000023313010 in words is "twenty-one trillion, twenty-three million, three hundred thirteen thousand, ten".