221771101030312 has 24 divisors (see below), whose sum is σ = 441719688691710. Its totient is φ = 104362871072000.

The previous prime is 221771101030307. The next prime is 221771101030387. The reversal of 221771101030312 is 213030101177122.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 207747079672356 + 14024021357956 = 14413434^2 + 3744866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47960875939 + ... + 47960880562.

Almost surely, 2^{221771101030312} is an apocalyptic number.

It is an amenable number.

221771101030312 is a deficient number, since it is larger than the sum of its proper divisors (219948587661398).

221771101030312 is a wasteful number, since it uses less digits than its factorization.

221771101030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95921756541 (or 95921756520 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The spelling of 221771101030312 in words is "two hundred twenty-one trillion, seven hundred seventy-one billion, one hundred one million, thirty thousand, three hundred twelve".