120202011121 has 4 divisors (see below), whose sum is σ = 120812173812. Its totient is φ = 119591848432.

The previous prime is 120202011119. The next prime is 120202011199. The reversal of 120202011121 is 121110202021.

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 59039280400 + 61162730721 = 242980^2 + 247311^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202011121 - 2¹ = 120202011119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120202011221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305081050 + ... + 305081443.

It is an arithmetic number, because the mean of its divisors is an integer number (30203043453).

Almost surely, 2^120202011121 is an apocalyptic number.

It is an amenable number.

120202011121 is a deficient number, since it is larger than the sum of its proper divisors (610162691).

120202011121 is an equidigital number, since it uses as much as digits as its factorization.

120202011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610162690.

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

Adding to 120202011121 its reverse (121110202021), we get a palindrome (241312213142).

The spelling of 120202011121 in words is "one hundred twenty billion, two hundred two million, eleven thousand, one hundred twenty-one".