21122321034 has 16 divisors (see below), whose sum is σ = 42654785472. Its totient is φ = 6972416448.

The previous prime is 21122321023. The next prime is 21122321053. The reversal of 21122321034 is 43012322112.

It is a self number, because there is not a number n which added to its sum of digits gives 21122321034.

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, 17088639 + ... + 17089874.

It is an arithmetic number, because the mean of its divisors is an integer number (2665924092).

Almost surely, 2^21122321034 is an apocalyptic number.

21122321034 is an abundant number, since it is smaller than the sum of its proper divisors (21532464438).

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

21122321034 is a wasteful number, since it uses less digits than its factorization.

21122321034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34178621.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21122321034 its reverse (43012322112), we get a palindrome (64134643146).

The spelling of 21122321034 in words is "twenty-one billion, one hundred twenty-two million, three hundred twenty-one thousand, thirty-four".