1210110021979 has 2 divisors, whose sum is σ = 1210110021980. Its totient is φ = 1210110021978.

The previous prime is 1210110021931. The next prime is 1210110022001. The reversal of 1210110021979 is 9791200110121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210110021979 - 2⁷ = 1210110021851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210110021079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605055010989 + 605055010990.

It is an arithmetic number, because the mean of its divisors is an integer number (605055010990).

Almost surely, 2^{1210110021979} is an apocalyptic number.

1210110021979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210110021979 is an equidigital number, since it uses as much as digits as its factorization.

1210110021979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 1210110021979 in words is "one trillion, two hundred ten billion, one hundred ten million, twenty-one thousand, nine hundred seventy-nine".