8221012974492 has 48 divisors (see below), whose sum is σ = 19663329840000. Its totient is φ = 2671854591168.

The previous prime is 8221012974479. The next prime is 8221012974509. The reversal of 8221012974492 is 2944792101228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13858867 + ... + 14439882.

It is an arithmetic number, because the mean of its divisors is an integer number (409652705000).

Almost surely, 2^{8221012974492} is an apocalyptic number.

It is an amenable number.

8221012974492 is an abundant number, since it is smaller than the sum of its proper divisors (11442316865508).

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

8221012974492 is a wasteful number, since it uses less digits than its factorization.

8221012974492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28299362 (or 28299360 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 8221012974492 in words is "eight trillion, two hundred twenty-one billion, twelve million, nine hundred seventy-four thousand, four hundred ninety-two".