221202101220112 has 80 divisors (see below), whose sum is σ = 449960321946240. Its totient is φ = 105142833314816.

The previous prime is 221202101219987. The next prime is 221202101220137. The reversal of 221202101220112 is 211022101202122.

It is a self number, because there is not a number n which added to its sum of digits gives 221202101220112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176169339 + ... + 177420517.

It is an arithmetic number, because the mean of its divisors is an integer number (5624504024328).

Almost surely, 2^{221202101220112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221202101220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224980160973120).

221202101220112 is an abundant number, since it is smaller than the sum of its proper divisors (228758220726128).

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

221202101220112 is a wasteful number, since it uses less digits than its factorization.

221202101220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254160 (or 1254154 counting only the distinct ones).

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

Adding to 221202101220112 its reverse (211022101202122), we get a palindrome (432224202422234).

The spelling of 221202101220112 in words is "two hundred twenty-one trillion, two hundred two billion, one hundred one million, two hundred twenty thousand, one hundred twelve".