20102020211121 has 32 divisors (see below), whose sum is σ = 27560529776640. Its totient is φ = 13024917417600.

The previous prime is 20102020211107. The next prime is 20102020211197. The reversal of 20102020211121 is 12111202020102.

It is not a de Polignac number, because 20102020211121 - 2²³ = 20102011822513 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102020211121.

It is not an unprimeable number, because it can be changed into a prime (20102020211821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411404790 + ... + 411453648.

It is an arithmetic number, because the mean of its divisors is an integer number (861266555520).

Almost surely, 2^{20102020211121} is an apocalyptic number.

It is an amenable number.

20102020211121 is a deficient number, since it is larger than the sum of its proper divisors (7458509565519).

20102020211121 is a wasteful number, since it uses less digits than its factorization.

20102020211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61517.

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

Adding to 20102020211121 its reverse (12111202020102), we get a palindrome (32213222231223).

The spelling of 20102020211121 in words is "twenty trillion, one hundred two billion, twenty million, two hundred eleven thousand, one hundred twenty-one".