221002102212112 has 40 divisors (see below), whose sum is σ = 488254644374616. Its totient is φ = 96000913176576.

The previous prime is 221002102212053. The next prime is 221002102212139. The reversal of 221002102212112 is 211212201200122.

It can be written as a sum of positive squares in 4 ways, for example, as 69956429088016 + 151045673124096 = 8363996^2 + 12290064^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221002102212112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31250293723 + ... + 31250300794.

Almost surely, 2^{221002102212112} is an apocalyptic number.

It is an amenable number.

221002102212112 is an abundant number, since it is smaller than the sum of its proper divisors (267252542162504).

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

221002102212112 is a wasteful number, since it uses less digits than its factorization.

221002102212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62500594555 (or 62500594549 counting only the distinct ones).

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

Adding to 221002102212112 its reverse (211212201200122), we get a palindrome (432214303412234).

The spelling of 221002102212112 in words is "two hundred twenty-one trillion, two billion, one hundred two million, two hundred twelve thousand, one hundred twelve".