1212936393121 has 2 divisors, whose sum is σ = 1212936393122. Its totient is φ = 1212936393120.

The previous prime is 1212936393107. The next prime is 1212936393139. The reversal of 1212936393121 is 1213936392121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1141681565025 + 71254828096 = 1068495^2 + 266936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212936393121 - 2²⁷ = 1212802175393 is a prime.

It is a super-2 number, since 2×1212936393121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212936393191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606468196560 + 606468196561.

It is an arithmetic number, because the mean of its divisors is an integer number (606468196561).

Almost surely, 2^{1212936393121} is an apocalyptic number.

It is an amenable number.

1212936393121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212936393121 is an equidigital number, since it uses as much as digits as its factorization.

1212936393121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The spelling of 1212936393121 in words is "one trillion, two hundred twelve billion, nine hundred thirty-six million, three hundred ninety-three thousand, one hundred twenty-one".