221655155136332 has 12 divisors (see below), whose sum is σ = 387897829928280. Its totient is φ = 110827203728256.

The previous prime is 221655155136263. The next prime is 221655155136341. The reversal of 221655155136332 is 233631551556122.

It is a super-2 number, since 2×221655155136332² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92123798 + ... + 94499229.

It is an arithmetic number, because the mean of its divisors is an integer number (32324819160690).

Almost surely, 2^{221655155136332} is an apocalyptic number.

It is an amenable number.

221655155136332 is a deficient number, since it is larger than the sum of its proper divisors (166242674791948).

221655155136332 is a wasteful number, since it uses less digits than its factorization.

221655155136332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186919960 (or 186919958 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 50.

The spelling of 221655155136332 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, one hundred fifty-five million, one hundred thirty-six thousand, three hundred thirty-two".