1202220979 has 2 divisors, whose sum is σ = 1202220980. Its totient is φ = 1202220978.

The previous prime is 1202220959. The next prime is 1202220997. The reversal of 1202220979 is 9790222021.

Together with next prime (1202220997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202220979 - 2⁵ = 1202220947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202220959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601110489 + 601110490.

It is an arithmetic number, because the mean of its divisors is an integer number (601110490).

Almost surely, 2^1202220979 is an apocalyptic number.

1202220979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202220979 is an equidigital number, since it uses as much as digits as its factorization.

1202220979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1202220979 is about 34673.0584027426. The cubic root of 1202220979 is about 1063.3137602378.

The spelling of 1202220979 in words is "one billion, two hundred two million, two hundred twenty thousand, nine hundred seventy-nine".