11111202020 has 48 divisors (see below), whose sum is σ = 24359868288. Its totient is φ = 4249175040.

The previous prime is 11111201999. The next prime is 11111202041. The reversal of 11111202020 is 2020211111.

It is an interprime number because it is at equal distance from previous prime (11111201999) and next prime (11111202041).

It is a junction number, because it is equal to n+sod(n) for n = 11111201992 and 11111202010.

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, 1217675 + ... + 1226765.

It is an arithmetic number, because the mean of its divisors is an integer number (507497256).

Almost surely, 2^11111202020 is an apocalyptic number.

11111202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111202020 is an abundant number, since it is smaller than the sum of its proper divisors (13248666268).

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

11111202020 is a wasteful number, since it uses less digits than its factorization.

11111202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11780 (or 11778 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11111202020 its reverse (2020211111), we get a palindrome (13131413131).

Subtracting from 11111202020 its reverse (2020211111), we obtain a palindrome (9090990909).

The spelling of 11111202020 in words is "eleven billion, one hundred eleven million, two hundred two thousand, twenty".