121112019697913 has 2 divisors, whose sum is σ = 121112019697914. Its totient is φ = 121112019697912.

The previous prime is 121112019697897. The next prime is 121112019697931. The reversal of 121112019697913 is 319796910211121.

Together with next prime (121112019697931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120057777439744 + 1054242258169 = 10957088^2 + 1026763^2 .

It is a cyclic number.

It is not a de Polignac number, because 121112019697913 - 2⁴ = 121112019697897 is a prime.

It is not a weakly prime, because it can be changed into another prime (121112019697993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556009848956 + 60556009848957.

It is an arithmetic number, because the mean of its divisors is an integer number (60556009848957).

Almost surely, 2^{121112019697913} is an apocalyptic number.

It is an amenable number.

121112019697913 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112019697913 is an equidigital number, since it uses as much as digits as its factorization.

121112019697913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 53.

The spelling of 121112019697913 in words is "one hundred twenty-one trillion, one hundred twelve billion, nineteen million, six hundred ninety-seven thousand, nine hundred thirteen".