21311202330110 has 128 divisors (see below), whose sum is σ = 48142994651136. Its totient is φ = 6598400739840.

The previous prime is 21311202330109. The next prime is 21311202330127. The reversal of 21311202330110 is 1103320211312.

It is a happy number.

It is a super-2 number, since 2×21311202330110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 502518527 + ... + 502560933.

It is an arithmetic number, because the mean of its divisors is an integer number (376117145712).

Almost surely, 2^{21311202330110} is an apocalyptic number.

21311202330110 is an abundant number, since it is smaller than the sum of its proper divisors (26831792321026).

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

21311202330110 is a wasteful number, since it uses less digits than its factorization.

21311202330110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46746.

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

Adding to 21311202330110 its reverse (1103320211312), we get a palindrome (22414522541422).

The spelling of 21311202330110 in words is "twenty-one trillion, three hundred eleven billion, two hundred two million, three hundred thirty thousand, one hundred ten".