21101313310 has 32 divisors (see below), whose sum is σ = 47354637312. Its totient is φ = 6577032480.

The previous prime is 21101313307. The next prime is 21101313313. The reversal of 21101313310 is 1331310112.

It is an interprime number because it is at equal distance from previous prime (21101313307) and next prime (21101313313).

It is a super-2 number, since 2×21101313310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101313313) 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, 13701382 + ... + 13702921.

It is an arithmetic number, because the mean of its divisors is an integer number (1479832416).

Almost surely, 2^21101313310 is an apocalyptic number.

21101313310 is an abundant number, since it is smaller than the sum of its proper divisors (26253324002).

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

21101313310 is a wasteful number, since it uses less digits than its factorization.

21101313310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27404328.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21101313310 its reverse (1331310112), we get a palindrome (22432623422).

The spelling of 21101313310 in words is "twenty-one billion, one hundred one million, three hundred thirteen thousand, three hundred ten".