20211102102122 has 16 divisors (see below), whose sum is σ = 30331129698600. Its totient is φ = 10100726474688.

The previous prime is 20211102102073. The next prime is 20211102102173. The reversal of 20211102102122 is 22120120111202.

It can be written as a sum of positive squares in 4 ways, for example, as 20096831736601 + 114270365521 = 4482949^2 + 338039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20211102102122.

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, 43811408 + ... + 44270324.

Almost surely, 2^{20211102102122} is an apocalyptic number.

20211102102122 is a deficient number, since it is larger than the sum of its proper divisors (10120027596478).

20211102102122 is a wasteful number, since it uses less digits than its factorization.

20211102102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469385.

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

Adding to 20211102102122 its reverse (22120120111202), we get a palindrome (42331222213324).

The spelling of 20211102102122 in words is "twenty trillion, two hundred eleven billion, one hundred two million, one hundred two thousand, one hundred twenty-two".