12121200999937 has 2 divisors, whose sum is σ = 12121200999938. Its totient is φ = 12121200999936.

The previous prime is 12121200999881. The next prime is 12121201000009. The reversal of 12121200999937 is 73999900212121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11845409024656 + 275791975281 = 3441716^2 + 525159^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121200999937 - 2²³ = 12121192611329 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121200996937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060600499968 + 6060600499969.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600499969).

Almost surely, 2^{12121200999937} is an apocalyptic number.

It is an amenable number.

12121200999937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121200999937 is an equidigital number, since it uses as much as digits as its factorization.

12121200999937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 12121200999937 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred thirty-seven".