21221020233192 has 64 divisors (see below), whose sum is σ = 57916166978880. Its totient is φ = 6440098862592.

The previous prime is 21221020233167. The next prime is 21221020233233. The reversal of 21221020233192 is 29133202012212.

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, 465840858 + ... + 465886409.

It is an arithmetic number, because the mean of its divisors is an integer number (904940109045).

Almost surely, 2^{21221020233192} is an apocalyptic number.

It is an amenable number.

21221020233192 is an abundant number, since it is smaller than the sum of its proper divisors (36695146745688).

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

21221020233192 is a wasteful number, since it uses less digits than its factorization.

21221020233192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931727362 (or 931727358 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21221020233192 in words is "twenty-one trillion, two hundred twenty-one billion, twenty million, two hundred thirty-three thousand, one hundred ninety-two".