21122112322 has 16 divisors (see below), whose sum is σ = 32709860352. Its totient is φ = 10218922560.

The previous prime is 21122112283. The next prime is 21122112359. The reversal of 21122112322 is 22321122112.

It is a super-2 number, since 2×21122112322² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122112322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508698 + ... + 548650.

It is an arithmetic number, because the mean of its divisors is an integer number (2044366272).

Almost surely, 2^21122112322 is an apocalyptic number.

21122112322 is a deficient number, since it is larger than the sum of its proper divisors (11587748030).

21122112322 is a wasteful number, since it uses less digits than its factorization.

21122112322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48513.

The product of its digits is 192, while the sum is 19.

Adding to 21122112322 its reverse (22321122112), we get a palindrome (43443234434).

The spelling of 21122112322 in words is "twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, three hundred twenty-two".