1210212109979 has 2 divisors, whose sum is σ = 1210212109980. Its totient is φ = 1210212109978.

The previous prime is 1210212109973. The next prime is 1210212110011. The reversal of 1210212109979 is 9799012120121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210212109979 - 2¹⁶ = 1210212044443 is a prime.

It is a super-2 number, since 2×1210212109979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210212109973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605106054989 + 605106054990.

It is an arithmetic number, because the mean of its divisors is an integer number (605106054990).

Almost surely, 2^{1210212109979} is an apocalyptic number.

1210212109979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210212109979 is an equidigital number, since it uses as much as digits as its factorization.

1210212109979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 44.

The spelling of 1210212109979 in words is "one trillion, two hundred ten billion, two hundred twelve million, one hundred nine thousand, nine hundred seventy-nine".