20111110022120 has 64 divisors (see below), whose sum is σ = 48731426226000. Its totient is φ = 7425540108288.

The previous prime is 20111110022111. The next prime is 20111110022167. The reversal of 20111110022120 is 2122001111102.

It can be written as a sum of positive squares in 8 ways, for example, as 10652299053796 + 9458810968324 = 3263786^2 + 3075518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20111110022095 and 20111110022104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46067426 + ... + 46501934.

Almost surely, 2^{20111110022120} is an apocalyptic number.

20111110022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111110022120 is an abundant number, since it is smaller than the sum of its proper divisors (28620316203880).

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

20111110022120 is a wasteful number, since it uses less digits than its factorization.

20111110022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523542 (or 523538 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20111110022120 its reverse (2122001111102), we get a palindrome (22233111133222).

The spelling of 20111110022120 in words is "twenty trillion, one hundred eleven billion, one hundred ten million, twenty-two thousand, one hundred twenty".