221201102202112 has 18 divisors (see below), whose sum is σ = 441538137599258. Its totient is φ = 110600551100928.

The previous prime is 221201102202107. The next prime is 221201102202127. The reversal of 221201102202112 is 211202201102122.

It can be written as a sum of positive squares in only one way, i.e., 220441248285696 + 759853916416 = 14847264^2 + 871696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221201102202112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432033402483 + ... + 432033402994.

Almost surely, 2^{221201102202112} is an apocalyptic number.

It is an amenable number.

221201102202112 is a deficient number, since it is larger than the sum of its proper divisors (220337035397146).

221201102202112 is an frugal number, since it uses more digits than its factorization.

221201102202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864066805493 (or 864066805479 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221201102202112 its reverse (211202201102122), we get a palindrome (432403303304234).

The spelling of 221201102202112 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred two million, two hundred two thousand, one hundred twelve".