21300212310 has 64 divisors (see below), whose sum is σ = 55092719808. Its totient is φ = 5239332864.

The previous prime is 21300212309. The next prime is 21300212327. The reversal of 21300212310 is 1321200312.

It is a super-2 number, since 2×21300212310² (a number of 21 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 21300212310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539814 + ... + 577926.

It is an arithmetic number, because the mean of its divisors is an integer number (860823747).

Almost surely, 2^21300212310 is an apocalyptic number.

21300212310 is an abundant number, since it is smaller than the sum of its proper divisors (33792507498).

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

21300212310 is a wasteful number, since it uses less digits than its factorization.

21300212310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39569.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21300212310 its reverse (1321200312), we get a palindrome (22621412622).

The spelling of 21300212310 in words is "twenty-one billion, three hundred million, two hundred twelve thousand, three hundred ten".