120102021121 has 2 divisors, whose sum is σ = 120102021122. Its totient is φ = 120102021120.

The previous prime is 120102021047. The next prime is 120102021131. The reversal of 120102021121 is 121120201021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119235543025 + 866478096 = 345305^2 + 29436^2 .

It is a cyclic number.

It is not a de Polignac number, because 120102021121 - 2⁷ = 120102020993 is a prime.

It is not a weakly prime, because it can be changed into another prime (120102021131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60051010560 + 60051010561.

It is an arithmetic number, because the mean of its divisors is an integer number (60051010561).

Almost surely, 2^120102021121 is an apocalyptic number.

It is an amenable number.

120102021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120102021121 is an equidigital number, since it uses as much as digits as its factorization.

120102021121 is an evil number, because the sum of its binary digits is even.

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

Adding to 120102021121 its reverse (121120201021), we get a palindrome (241222222142).

The spelling of 120102021121 in words is "one hundred twenty billion, one hundred two million, twenty-one thousand, one hundred twenty-one".