21222013123104 has 24 divisors (see below), whose sum is σ = 55707784448400. Its totient is φ = 7074004374336.

The previous prime is 21222013123079. The next prime is 21222013123127. The reversal of 21222013123104 is 40132131022212.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110531318254 + ... + 110531318445.

It is an arithmetic number, because the mean of its divisors is an integer number (2321157685350).

Almost surely, 2^{21222013123104} is an apocalyptic number.

21222013123104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21222013123104 is an abundant number, since it is smaller than the sum of its proper divisors (34485771325296).

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

21222013123104 is a wasteful number, since it uses less digits than its factorization.

21222013123104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221062636712 (or 221062636704 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21222013123104 its reverse (40132131022212), we get a palindrome (61354144145316).

The spelling of 21222013123104 in words is "twenty-one trillion, two hundred twenty-two billion, thirteen million, one hundred twenty-three thousand, one hundred four".