942112122121 has 4 divisors (see below), whose sum is σ = 950449397652. Its totient is φ = 933774846592.

The previous prime is 942112122113. The next prime is 942112122131. The reversal of 942112122121 is 121221211249.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 476326346896 + 465785775225 = 690164^2 + 682485^2 .

It is a cyclic number.

It is not a de Polignac number, because 942112122121 - 2³ = 942112122113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 942112122121.

It is not an unprimeable number, because it can be changed into a prime (942112122131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4168637596 + ... + 4168637821.

It is an arithmetic number, because the mean of its divisors is an integer number (237612349413).

Almost surely, 2^942112122121 is an apocalyptic number.

It is an amenable number.

942112122121 is a deficient number, since it is larger than the sum of its proper divisors (8337275531).

942112122121 is a wasteful number, since it uses less digits than its factorization.

942112122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8337275530.

The product of its digits is 1152, while the sum is 28.

The spelling of 942112122121 in words is "nine hundred forty-two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".