21311132310210 has 32 divisors (see below), whose sum is σ = 51147193956480. Its totient is φ = 5682915681408.

The previous prime is 21311132310197. The next prime is 21311132310211. The reversal of 21311132310210 is 1201323111312.

It is a super-2 number, since 2×21311132310210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21311132310211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20934 + ... + 6528606.

It is an arithmetic number, because the mean of its divisors is an integer number (1598349811140).

Almost surely, 2^{21311132310210} is an apocalyptic number.

21311132310210 is an abundant number, since it is smaller than the sum of its proper divisors (29836061646270).

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

21311132310210 is a wasteful number, since it uses less digits than its factorization.

21311132310210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616842.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21311132310210 its reverse (1201323111312), we get a palindrome (22512455421522).

The spelling of 21311132310210 in words is "twenty-one trillion, three hundred eleven billion, one hundred thirty-two million, three hundred ten thousand, two hundred ten".