10111111122020 has 96 divisors (see below), whose sum is σ = 21894996211200. Its totient is φ = 3920460470784.

The previous prime is 10111111122019. The next prime is 10111111122029. The reversal of 10111111122020 is 2022111111101.

It is a junction number, because it is equal to n+sod(n) for n = 10111111121986 and 10111111122004.

It is not an unprimeable number, because it can be changed into a prime (10111111122029) 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, 71988902 + ... + 72129218.

It is an arithmetic number, because the mean of its divisors is an integer number (228072877200).

Almost surely, 2^{10111111122020} is an apocalyptic number.

10111111122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111111122020 is an abundant number, since it is smaller than the sum of its proper divisors (11783885089180).

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

10111111122020 is a wasteful number, since it uses less digits than its factorization.

10111111122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141237 (or 141235 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10111111122020 its reverse (2022111111101), we get a palindrome (12133222233121).

The spelling of 10111111122020 in words is "ten trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, twenty".