21013122322 has 32 divisors (see below), whose sum is σ = 33291699840. Its totient is φ = 9927265920.

The previous prime is 21013122311. The next prime is 21013122329. The reversal of 21013122322 is 22322131012.

It is a self number, because there is not a number n which added to its sum of digits gives 21013122322.

It is not an unprimeable number, because it can be changed into a prime (21013122329) 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 15 ways as a sum of consecutive naturals, for example, 6069672 + ... + 6073132.

It is an arithmetic number, because the mean of its divisors is an integer number (1040365620).

Almost surely, 2^21013122322 is an apocalyptic number.

21013122322 is a deficient number, since it is larger than the sum of its proper divisors (12278577518).

21013122322 is a wasteful number, since it uses less digits than its factorization.

21013122322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21013122322 its reverse (22322131012), we get a palindrome (43335253334).

The spelling of 21013122322 in words is "twenty-one billion, thirteen million, one hundred twenty-two thousand, three hundred twenty-two".