221887333690 has 16 divisors (see below), whose sum is σ = 435706037280. Its totient is φ = 80686303120.

The previous prime is 221887333687. The next prime is 221887333729. The reversal of 221887333690 is 96333788122.

It is a super-2 number, since 2×221887333690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008578680 + ... + 1008578899.

It is an arithmetic number, because the mean of its divisors is an integer number (27231627330).

Almost surely, 2^221887333690 is an apocalyptic number.

221887333690 is a deficient number, since it is larger than the sum of its proper divisors (213818703590).

221887333690 is a wasteful number, since it uses less digits than its factorization.

221887333690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017157597.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 221887333690 in words is "two hundred twenty-one billion, eight hundred eighty-seven million, three hundred thirty-three thousand, six hundred ninety".