98190505121 has 2 divisors, whose sum is σ = 98190505122. Its totient is φ = 98190505120.

The previous prime is 98190505103. The next prime is 98190505151. The reversal of 98190505121 is 12150509189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95095140625 + 3095364496 = 308375^2 + 55636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98190505121 is a prime.

It is not a weakly prime, because it can be changed into another prime (98190505151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49095252560 + 49095252561.

It is an arithmetic number, because the mean of its divisors is an integer number (49095252561).

Almost surely, 2^98190505121 is an apocalyptic number.

It is an amenable number.

98190505121 is a deficient number, since it is larger than the sum of its proper divisors (1).

98190505121 is an equidigital number, since it uses as much as digits as its factorization.

98190505121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 41.

The spelling of 98190505121 in words is "ninety-eight billion, one hundred ninety million, five hundred five thousand, one hundred twenty-one".