11212112020 has 12 divisors (see below), whose sum is σ = 23545435284. Its totient is φ = 4484844800.

The previous prime is 11212111973. The next prime is 11212112063. The reversal of 11212112020 is 2021121211.

It can be written as a sum of positive squares in 2 ways, for example, as 8340438276 + 2871673744 = 91326^2 + 53588^2 .

It is a super-2 number, since 2×11212112020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280302781 + ... + 280302820.

It is an arithmetic number, because the mean of its divisors is an integer number (1962119607).

Almost surely, 2^11212112020 is an apocalyptic number.

11212112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212112020 is an abundant number, since it is smaller than the sum of its proper divisors (12333323264).

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

11212112020 is a wasteful number, since it uses less digits than its factorization.

11212112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560605610 (or 560605608 counting only the distinct ones).

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

Adding to 11212112020 its reverse (2021121211), we get a palindrome (13233233231).

The spelling of 11212112020 in words is "eleven billion, two hundred twelve million, one hundred twelve thousand, twenty".