20113111132120 has 128 divisors (see below), whose sum is σ = 49144237056000. Its totient is φ = 7389835568640.

The previous prime is 20113111132099. The next prime is 20113111132141. The reversal of 20113111132120 is 2123111131102.

It is an interprime number because it is at equal distance from previous prime (20113111132099) and next prime (20113111132141).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2618352 + ... + 6861631.

It is an arithmetic number, because the mean of its divisors is an integer number (383939352000).

Almost surely, 2^{20113111132120} is an apocalyptic number.

20113111132120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113111132120 is an abundant number, since it is smaller than the sum of its proper divisors (29031125923880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113111132120 is a wasteful number, since it uses less digits than its factorization.

20113111132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480113 (or 9480109 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 20113111132120 its reverse (2123111131102), we get a palindrome (22236222263222).

The spelling of 20113111132120 in words is "twenty trillion, one hundred thirteen billion, one hundred eleven million, one hundred thirty-two thousand, one hundred twenty".