221020120110122 has 8 divisors (see below), whose sum is σ = 337785466583556. Its totient is φ = 108424964582272.

The previous prime is 221020120110109. The next prime is 221020120110161. The reversal of 221020120110122 is 221011021020122.

It can be written as a sum of positive squares in 2 ways, for example, as 198103401156241 + 22916718953881 = 14074921^2 + 4787141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221020120110122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042547736263 + ... + 1042547736474.

Almost surely, 2^{221020120110122} is an apocalyptic number.

221020120110122 is a deficient number, since it is larger than the sum of its proper divisors (116765346473434).

221020120110122 is a wasteful number, since it uses less digits than its factorization.

221020120110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085095472792.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221020120110122 its reverse (221011021020122), we get a palindrome (442031141130244).

The spelling of 221020120110122 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-two".