1210232011979 has 2 divisors, whose sum is σ = 1210232011980. Its totient is φ = 1210232011978.

The previous prime is 1210232011943. The next prime is 1210232012029. The reversal of 1210232011979 is 9791102320121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210232011979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1210232013979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605116005989 + 605116005990.

It is an arithmetic number, because the mean of its divisors is an integer number (605116005990).

Almost surely, 2^{1210232011979} is an apocalyptic number.

1210232011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210232011979 is an equidigital number, since it uses as much as digits as its factorization.

1210232011979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 1210232011979 in words is "one trillion, two hundred ten billion, two hundred thirty-two million, eleven thousand, nine hundred seventy-nine".