20202110111121 has 32 divisors (see below), whose sum is σ = 28465062850560. Its totient is φ = 12718545675264.

The previous prime is 20202110111107. The next prime is 20202110111143. The reversal of 20202110111121 is 12111101120202.

It is a happy number.

It is not a de Polignac number, because 20202110111121 - 2¹⁷ = 20202109980049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20202110111121.

It is not an unprimeable number, because it can be changed into a prime (20202110111101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82662321 + ... + 82906353.

It is an arithmetic number, because the mean of its divisors is an integer number (889533214080).

Almost surely, 2^{20202110111121} is an apocalyptic number.

It is an amenable number.

20202110111121 is a deficient number, since it is larger than the sum of its proper divisors (8262952739439).

20202110111121 is a wasteful number, since it uses less digits than its factorization.

20202110111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259325.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20202110111121 its reverse (12111101120202), we get a palindrome (32313211231323).

The spelling of 20202110111121 in words is "twenty trillion, two hundred two billion, one hundred ten million, one hundred eleven thousand, one hundred twenty-one".