11122112020 has 24 divisors (see below), whose sum is σ = 23363911368. Its totient is φ = 4447420800.

The previous prime is 11122111999. The next prime is 11122112041. The reversal of 11122112020 is 2021122111.

It is an interprime number because it is at equal distance from previous prime (11122111999) and next prime (11122112041).

It can be written as a sum of positive squares in 4 ways, for example, as 928786576 + 10193325444 = 30476^2 + 100962^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23791 + ... + 151030.

It is an arithmetic number, because the mean of its divisors is an integer number (973496307).

Almost surely, 2^11122112020 is an apocalyptic number.

11122112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122112020 is an abundant number, since it is smaller than the sum of its proper divisors (12241799348).

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

11122112020 is a wasteful number, since it uses less digits than its factorization.

11122112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178011 (or 178009 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11122112020 its reverse (2021122111), we get a palindrome (13143234131).

The spelling of 11122112020 in words is "eleven billion, one hundred twenty-two million, one hundred twelve thousand, twenty".