1020120120979 has 2 divisors, whose sum is σ = 1020120120980. Its totient is φ = 1020120120978.

The previous prime is 1020120120973. The next prime is 1020120120989. The reversal of 1020120120979 is 9790210210201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020120120979 - 2¹¹ = 1020120118931 is a prime.

It is a super-2 number, since 2×1020120120979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020120120973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510060060489 + 510060060490.

It is an arithmetic number, because the mean of its divisors is an integer number (510060060490).

Almost surely, 2^{1020120120979} is an apocalyptic number.

1020120120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020120120979 is an equidigital number, since it uses as much as digits as its factorization.

1020120120979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 1020120120979 in words is "one trillion, twenty billion, one hundred twenty million, one hundred twenty thousand, nine hundred seventy-nine".