21522933326 has 16 divisors (see below), whose sum is σ = 33153546240. Its totient is φ = 10475588760.

The previous prime is 21522933323. The next prime is 21522933349. The reversal of 21522933326 is 62333922512.

It is a self number, because there is not a number n which added to its sum of digits gives 21522933326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21522933323) 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, 948086 + ... + 970521.

It is an arithmetic number, because the mean of its divisors is an integer number (2072096640).

Almost surely, 2^21522933326 is an apocalyptic number.

21522933326 is a deficient number, since it is larger than the sum of its proper divisors (11630612914).

21522933326 is a wasteful number, since it uses less digits than its factorization.

21522933326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918759.

The product of its digits is 116640, while the sum is 38.

The spelling of 21522933326 in words is "twenty-one billion, five hundred twenty-two million, nine hundred thirty-three thousand, three hundred twenty-six".