120120120212021 has 2 divisors, whose sum is σ = 120120120212022. Its totient is φ = 120120120212020.

The previous prime is 120120120212017. The next prime is 120120120212087. The reversal of 120120120212021 is 120212021021021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90964116075121 + 29156004136900 = 9537511^2 + 5399630^2 .

It is an emirp because it is prime and its reverse (120212021021021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120120120212021 - 2² = 120120120212017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120120120214021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060060106010 + 60060060106011.

It is an arithmetic number, because the mean of its divisors is an integer number (60060060106011).

Almost surely, 2^{120120120212021} is an apocalyptic number.

It is an amenable number.

120120120212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120120120212021 is an equidigital number, since it uses as much as digits as its factorization.

120120120212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120120120212021 its reverse (120212021021021), we get a palindrome (240332141233042).

The spelling of 120120120212021 in words is "one hundred twenty trillion, one hundred twenty billion, one hundred twenty million, two hundred twelve thousand, twenty-one".