221274139675 has 18 divisors (see below), whose sum is σ = 280780432548. Its totient is φ = 172890532080.

The previous prime is 221274139649. The next prime is 221274139703. The reversal of 221274139675 is 576931472122.

It is not a de Polignac number, because 221274139675 - 2⁵ = 221274139643 is a prime.

It is a super-2 number, since 2×221274139675² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15415852 + ... + 15430198.

Almost surely, 2^221274139675 is an apocalyptic number.

221274139675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221274139675 is a deficient number, since it is larger than the sum of its proper divisors (59506292873).

221274139675 is an frugal number, since it uses more digits than its factorization.

221274139675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28747 (or 14395 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The spelling of 221274139675 in words is "two hundred twenty-one billion, two hundred seventy-four million, one hundred thirty-nine thousand, six hundred seventy-five".