21122503403274 has 144 divisors (see below), whose sum is σ = 59455936376928. Its totient is φ = 5570770046688.

The previous prime is 21122503403273. The next prime is 21122503403293. The reversal of 21122503403274 is 47230430522112.

21122503403274 is a `hidden beast` number, since 2 + 1 + 1 + 225 + 0 + 3 + 403 + 27 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (21122503403273) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33804972 + ... + 34424135.

It is an arithmetic number, because the mean of its divisors is an integer number (412888447062).

Almost surely, 2^{21122503403274} is an apocalyptic number.

21122503403274 is an abundant number, since it is smaller than the sum of its proper divisors (38333432973654).

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

21122503403274 is a wasteful number, since it uses less digits than its factorization.

21122503403274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68229151 (or 68229132 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 21122503403274 its reverse (47230430522112), we get a palindrome (68352933925386).

The spelling of 21122503403274 in words is "twenty-one trillion, one hundred twenty-two billion, five hundred three million, four hundred three thousand, two hundred seventy-four".