221010020112 has 80 divisors (see below), whose sum is σ = 652782183552. Its totient is φ = 63118970880.

The previous prime is 221010020071. The next prime is 221010020113. The reversal of 221010020112 is 211020010122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (221010020113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661888 + ... + 938144.

Almost surely, 2^221010020112 is an apocalyptic number.

It is an amenable number.

221010020112 is an abundant number, since it is smaller than the sum of its proper divisors (431772163440).

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

221010020112 is a wasteful number, since it uses less digits than its factorization.

221010020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278656 (or 278650 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221010020112 its reverse (211020010122), we get a palindrome (432030030234).

The spelling of 221010020112 in words is "two hundred twenty-one billion, ten million, twenty thousand, one hundred twelve".