1012120322122 has 72 divisors (see below), whose sum is σ = 2007265564836. Its totient is φ = 379325431296.

The previous prime is 1012120322053. The next prime is 1012120322149. The reversal of 1012120322122 is 2212230212101.

It can be written as a sum of positive squares in 2 ways, for example, as 748970815761 + 263149506361 = 865431^2 + 512981^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1012120322122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 640423 + ... + 1560250.

Almost surely, 2^{1012120322122} is an apocalyptic number.

1012120322122 is a deficient number, since it is larger than the sum of its proper divisors (995145242714).

1012120322122 is a wasteful number, since it uses less digits than its factorization.

1012120322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200740 (or 2200714 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1012120322122 its reverse (2212230212101), we get a palindrome (3224350534223).

The spelling of 1012120322122 in words is "one trillion, twelve billion, one hundred twenty million, three hundred twenty-two thousand, one hundred twenty-two".