112121102020 has 24 divisors (see below), whose sum is σ = 235775565144. Its totient is φ = 44787250176.

The previous prime is 112121102017. The next prime is 112121102039. The reversal of 112121102020 is 20201121211.

It can be written as a sum of positive squares in 4 ways, for example, as 62581026244 + 49540075776 = 250162^2 + 222576^2 .

It is a super-2 number, since 2×112121102020² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809389 + ... + 3838708.

It is an arithmetic number, because the mean of its divisors is an integer number (9823981881).

Almost surely, 2^112121102020 is an apocalyptic number.

112121102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121102020 is an abundant number, since it is smaller than the sum of its proper divisors (123654463124).

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

112121102020 is a wasteful number, since it uses less digits than its factorization.

112121102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7648839 (or 7648837 counting only the distinct ones).

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

Adding to 112121102020 its reverse (20201121211), we get a palindrome (132322223231).

The spelling of 112121102020 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred two thousand, twenty".