21222530521442 has 16 divisors (see below), whose sum is σ = 32079047372064. Its totient is φ = 10529526072000.

The previous prime is 21222530521433. The next prime is 21222530521513. The reversal of 21222530521442 is 24412503522212.

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 7 ways as a sum of consecutive naturals, for example, 924017 + ... + 6580187.

It is an arithmetic number, because the mean of its divisors is an integer number (2004940460754).

Almost surely, 2^{21222530521442} is an apocalyptic number.

21222530521442 is a deficient number, since it is larger than the sum of its proper divisors (10856516850622).

21222530521442 is a wasteful number, since it uses less digits than its factorization.

21222530521442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670625.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 21222530521442 in words is "twenty-one trillion, two hundred twenty-two billion, five hundred thirty million, five hundred twenty-one thousand, four hundred forty-two".