221020220210112 has 140 divisors (see below), whose sum is σ = 683658962520336. Its totient is φ = 70470215101440.

The previous prime is 221020220210047. The next prime is 221020220210129. The reversal of 221020220210112 is 211012022020122.

It is a happy number.

221020220210112 is a `hidden beast` number, since 2 + 210 + 20 + 220 + 210 + 1 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 926730189 + ... + 926968652.

Almost surely, 2^{221020220210112} is an apocalyptic number.

It is an amenable number.

221020220210112 is an abundant number, since it is smaller than the sum of its proper divisors (462638742310224).

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

221020220210112 is a wasteful number, since it uses less digits than its factorization.

221020220210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853698888 (or 1853698869 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221020220210112 its reverse (211012022020122), we get a palindrome (432032242230234).

The spelling of 221020220210112 in words is "two hundred twenty-one trillion, twenty billion, two hundred twenty million, two hundred ten thousand, one hundred twelve".