221313631872770 has 8 divisors (see below), whose sum is σ = 398364537371004. Its totient is φ = 88525452749104.

The previous prime is 221313631872769. The next prime is 221313631872791. The reversal of 221313631872770 is 77278136313122.

It can be written as a sum of positive squares in 2 ways, for example, as 220288258936321 + 1025372936449 = 14842111^2 + 1012607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 11065681593629 + ... + 11065681593648.

Almost surely, 2^{221313631872770} is an apocalyptic number.

221313631872770 is a deficient number, since it is larger than the sum of its proper divisors (177050905498234).

221313631872770 is a wasteful number, since it uses less digits than its factorization.

221313631872770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22131363187284.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 221313631872770 in words is "two hundred twenty-one trillion, three hundred thirteen billion, six hundred thirty-one million, eight hundred seventy-two thousand, seven hundred seventy".