20002210211121 has 16 divisors (see below), whose sum is σ = 27832591315584. Its totient is φ = 12753460843904.

The previous prime is 20002210211089. The next prime is 20002210211143. The reversal of 20002210211121 is 12111201220002.

It is a cyclic number.

It is not a de Polignac number, because 20002210211121 - 2⁵ = 20002210211089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002210211121.

It is not an unprimeable number, because it can be changed into a prime (20002210211521) 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, 17296716 + ... + 18416861.

It is an arithmetic number, because the mean of its divisors is an integer number (1739536957224).

Almost surely, 2^{20002210211121} is an apocalyptic number.

It is an amenable number.

20002210211121 is a deficient number, since it is larger than the sum of its proper divisors (7830381104463).

20002210211121 is a wasteful number, since it uses less digits than its factorization.

20002210211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35721720.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20002210211121 its reverse (12111201220002), we get a palindrome (32113411431123).

The spelling of 20002210211121 in words is "twenty trillion, two billion, two hundred ten million, two hundred eleven thousand, one hundred twenty-one".