1213120212979 has 2 divisors, whose sum is σ = 1213120212980. Its totient is φ = 1213120212978.

The previous prime is 1213120212923. The next prime is 1213120213031. The reversal of 1213120212979 is 9792120213121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213120212979 - 2²³ = 1213111824371 is a prime.

It is a super-2 number, since 2×1213120212979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213120219979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606560106489 + 606560106490.

It is an arithmetic number, because the mean of its divisors is an integer number (606560106490).

Almost surely, 2^{1213120212979} is an apocalyptic number.

1213120212979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213120212979 is an equidigital number, since it uses as much as digits as its factorization.

1213120212979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 1213120212979 in words is "one trillion, two hundred thirteen billion, one hundred twenty million, two hundred twelve thousand, nine hundred seventy-nine".