21259932822 has 12 divisors (see below), whose sum is σ = 46063187820. Its totient is φ = 7086644268.

The previous prime is 21259932821. The next prime is 21259932833. The reversal of 21259932822 is 22823995212.

21259932822 is a `hidden beast` number, since 2 + 1 + 2 + 599 + 32 + 8 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21259932821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 590553672 + ... + 590553707.

It is an arithmetic number, because the mean of its divisors is an integer number (3838598985).

Almost surely, 2^21259932822 is an apocalyptic number.

21259932822 is an abundant number, since it is smaller than the sum of its proper divisors (24803254998).

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

21259932822 is a wasteful number, since it uses less digits than its factorization.

21259932822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181107387 (or 1181107384 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 21259932822 in words is "twenty-one billion, two hundred fifty-nine million, nine hundred thirty-two thousand, eight hundred twenty-two".