21302300320312 has 32 divisors (see below), whose sum is σ = 43620927851520. Its totient is φ = 9672188041440.

The previous prime is 21302300320307. The next prime is 21302300320313.

21302300320312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302300320313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133366488 + ... + 133526119.

It is an arithmetic number, because the mean of its divisors is an integer number (1363153995360).

Almost surely, 2^{21302300320312} is an apocalyptic number.

21302300320312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21302300320312 is an abundant number, since it is smaller than the sum of its proper divisors (22318627531208).

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

21302300320312 is a wasteful number, since it uses less digits than its factorization.

21302300320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266893531 (or 266893527 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

It can be divided in two parts, 21302300 and 320312, that added together give a palindrome (21622612).

The spelling of 21302300320312 in words is "twenty-one trillion, three hundred two billion, three hundred million, three hundred twenty thousand, three hundred twelve".