120021103131121 has 2 divisors, whose sum is σ = 120021103131122. Its totient is φ = 120021103131120.

The previous prime is 120021103131109. The next prime is 120021103131229. The reversal of 120021103131121 is 121131301120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118163661236721 + 1857441894400 = 10870311^2 + 1362880^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021103131121 - 2⁹ = 120021103130609 is a prime.

It is a super-2 number, since 2×120021103131121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120021103161121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010551565560 + 60010551565561.

It is an arithmetic number, because the mean of its divisors is an integer number (60010551565561).

Almost surely, 2^{120021103131121} is an apocalyptic number.

It is an amenable number.

120021103131121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021103131121 is an equidigital number, since it uses as much as digits as its factorization.

120021103131121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 120021103131121 its reverse (121131301120021), we get a palindrome (241152404251142).

The spelling of 120021103131121 in words is "one hundred twenty trillion, twenty-one billion, one hundred three million, one hundred thirty-one thousand, one hundred twenty-one".