102120120121121 has 2 divisors, whose sum is σ = 102120120121122. Its totient is φ = 102120120121120.

The previous prime is 102120120121099. The next prime is 102120120121147. The reversal of 102120120121121 is 121121021021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86684218510096 + 15435901611025 = 9310436^2 + 3928855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102120120121121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102120120121121.

It is not a weakly prime, because it can be changed into another prime (102120120121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060060060560 + 51060060060561.

It is an arithmetic number, because the mean of its divisors is an integer number (51060060060561).

Almost surely, 2^{102120120121121} is an apocalyptic number.

It is an amenable number.

102120120121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120120121121 is an equidigital number, since it uses as much as digits as its factorization.

102120120121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102120120121121 its reverse (121121021021201), we get a palindrome (223241141142322).

The spelling of 102120120121121 in words is "one hundred two trillion, one hundred twenty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".