120121121137 has 2 divisors, whose sum is σ = 120121121138. Its totient is φ = 120121121136.

The previous prime is 120121121077. The next prime is 120121121161. The reversal of 120121121137 is 731121121021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97184321536 + 22936799601 = 311744^2 + 151449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120121121137 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121121177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060560568 + 60060560569.

It is an arithmetic number, because the mean of its divisors is an integer number (60060560569).

Almost surely, 2^120121121137 is an apocalyptic number.

It is an amenable number.

120121121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121121137 is an equidigital number, since it uses as much as digits as its factorization.

120121121137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 120121121137 its reverse (731121121021), we get a palindrome (851242242158).

The spelling of 120121121137 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-seven".