221201210202112 has 72 divisors (see below), whose sum is σ = 514505744805780. Its totient is φ = 94800518615040.

The previous prime is 221201210202101. The next prime is 221201210202127. The reversal of 221201210202112 is 211202012102122.

It is a self number, because there is not a number n which added to its sum of digits gives 221201210202112.

It is a congruent number.

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, 1102026214 + ... + 1102226917.

Almost surely, 2^{221201210202112} is an apocalyptic number.

It is an amenable number.

221201210202112 is an abundant number, since it is smaller than the sum of its proper divisors (293304534603668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221201210202112 is an equidigital number, since it uses as much as digits as its factorization.

221201210202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204253167 (or 2204253140 counting only the distinct ones).

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

Adding to 221201210202112 its reverse (211202012102122), we get a palindrome (432403222304234).

The spelling of 221201210202112 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred ten million, two hundred two thousand, one hundred twelve".