21312010001310 has 32 divisors (see below), whose sum is σ = 58455798861312. Its totient is φ = 4871316571680.

The previous prime is 21312010001291. The next prime is 21312010001311. The reversal of 21312010001310 is 1310001021312.

It is a happy number.

It is a super-2 number, since 2×21312010001310² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21312010001310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312010001311) 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, 50742880746 + ... + 50742881165.

It is an arithmetic number, because the mean of its divisors is an integer number (1826743714416).

Almost surely, 2^{21312010001310} is an apocalyptic number.

21312010001310 is an abundant number, since it is smaller than the sum of its proper divisors (37143788860002).

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

21312010001310 is a wasteful number, since it uses less digits than its factorization.

21312010001310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101485761928.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21312010001310 its reverse (1310001021312), we get a palindrome (22622011022622).

The spelling of 21312010001310 in words is "twenty-one trillion, three hundred twelve billion, ten million, one thousand, three hundred ten".