21122503403168 has 48 divisors (see below), whose sum is σ = 43030132770240. Its totient is φ = 10199735056896.

The previous prime is 21122503403167. The next prime is 21122503403273. The reversal of 21122503403168 is 86130430522112.

It is not an unprimeable number, because it can be changed into a prime (21122503403167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86117180 + ... + 86362107.

It is an arithmetic number, because the mean of its divisors is an integer number (896461099380).

Almost surely, 2^{21122503403168} is an apocalyptic number.

It is an amenable number.

21122503403168 is an abundant number, since it is smaller than the sum of its proper divisors (21907629367072).

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

21122503403168 is a wasteful number, since it uses less digits than its factorization.

21122503403168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172479429 (or 172479421 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 21122503403168 in words is "twenty-one trillion, one hundred twenty-two billion, five hundred three million, four hundred three thousand, one hundred sixty-eight".