21130331220110 has 96 divisors (see below), whose sum is σ = 44812749744000. Its totient is φ = 7151644071936.

The previous prime is 21130331220109. The next prime is 21130331220113. The reversal of 21130331220110 is 1102213303112.

It is a happy number.

It is a super-2 number, since 2×21130331220110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130331220113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219398846 + ... + 219495134.

It is an arithmetic number, because the mean of its divisors is an integer number (466799476500).

Almost surely, 2^{21130331220110} is an apocalyptic number.

21130331220110 is an abundant number, since it is smaller than the sum of its proper divisors (23682418523890).

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

21130331220110 is a wasteful number, since it uses less digits than its factorization.

21130331220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102058 (or 102051 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21130331220110 its reverse (1102213303112), we get a palindrome (22232544523222).

The spelling of 21130331220110 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirty-one million, two hundred twenty thousand, one hundred ten".