1012122120 has 32 divisors (see below), whose sum is σ = 3036366720. Its totient is φ = 269899200.

The previous prime is 1012122103. The next prime is 1012122143. The reversal of 1012122120 is 212212101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1012122096 and 1012122105.

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, 4217056 + ... + 4217295.

It is an arithmetic number, because the mean of its divisors is an integer number (94886460).

Almost surely, 2^1012122120 is an apocalyptic number.

1012122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012122120 is an abundant number, since it is smaller than the sum of its proper divisors (2024244600).

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

1012122120 is a wasteful number, since it uses less digits than its factorization.

1012122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434365 (or 8434361 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1012122120 is about 31813.8667879276. The cubic root of 1012122120 is about 1004.0244884320.

Adding to 1012122120 its reverse (212212101), we get a palindrome (1224334221).

The spelling of 1012122120 in words is "one billion, twelve million, one hundred twenty-two thousand, one hundred twenty".