21302033312 has 48 divisors (see below), whose sum is σ = 50452194240. Its totient is φ = 8648944128.

The previous prime is 21302033309. The next prime is 21302033351. The reversal of 21302033312 is 21333020312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2498333 + ... + 2506844.

It is an arithmetic number, because the mean of its divisors is an integer number (1051087380).

Almost surely, 2^21302033312 is an apocalyptic number.

It is an amenable number.

21302033312 is an abundant number, since it is smaller than the sum of its proper divisors (29150160928).

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

21302033312 is a wasteful number, since it uses less digits than its factorization.

21302033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005213 (or 5005205 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21302033312 its reverse (21333020312), we get a palindrome (42635053624).

The spelling of 21302033312 in words is "twenty-one billion, three hundred two million, thirty-three thousand, three hundred twelve".