21322533345 has 32 divisors (see below), whose sum is σ = 35083348608. Its totient is φ = 11050380288.

The previous prime is 21322533317. The next prime is 21322533371. The reversal of 21322533345 is 54333522312.

It is not a de Polignac number, because 21322533345 - 2¹⁴ = 21322516961 is a prime.

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, 412377 + ... + 461193.

It is an arithmetic number, because the mean of its divisors is an integer number (1096354644).

Almost surely, 2^21322533345 is an apocalyptic number.

It is an amenable number.

21322533345 is a deficient number, since it is larger than the sum of its proper divisors (13760815263).

21322533345 is a wasteful number, since it uses less digits than its factorization.

21322533345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49649.

The product of its digits is 64800, while the sum is 33.

The spelling of 21322533345 in words is "twenty-one billion, three hundred twenty-two million, five hundred thirty-three thousand, three hundred forty-five".