21032100030312 has 96 divisors (see below), whose sum is σ = 65155819884480. Its totient is φ = 6003959500800.

The previous prime is 21032100030281. The next prime is 21032100030323. The reversal of 21032100030312 is 21303000123012.

21032100030312 is a `hidden beast` number, since 2 + 1 + 0 + 321 + 0 + 0 + 0 + 30 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17515314 + ... + 18677537.

It is an arithmetic number, because the mean of its divisors is an integer number (678706457130).

Almost surely, 2^{21032100030312} is an apocalyptic number.

It is an amenable number.

21032100030312 is an abundant number, since it is smaller than the sum of its proper divisors (44123719854168).

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

21032100030312 is a wasteful number, since it uses less digits than its factorization.

21032100030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36194023 (or 36194016 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21032100030312 its reverse (21303000123012), we get a palindrome (42335100153324).

The spelling of 21032100030312 in words is "twenty-one trillion, thirty-two billion, one hundred million, thirty thousand, three hundred twelve".