1200312021179 has 2 divisors, whose sum is σ = 1200312021180. Its totient is φ = 1200312021178.

The previous prime is 1200312021133. The next prime is 1200312021217. The reversal of 1200312021179 is 9711202130021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200312021179 - 2²⁸ = 1200043585723 is a prime.

It is a super-2 number, since 2×1200312021179² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1200312021379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600156010589 + 600156010590.

It is an arithmetic number, because the mean of its divisors is an integer number (600156010590).

Almost surely, 2^{1200312021179} is an apocalyptic number.

1200312021179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200312021179 is an equidigital number, since it uses as much as digits as its factorization.

1200312021179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 1200312021179 in words is "one trillion, two hundred billion, three hundred twelve million, twenty-one thousand, one hundred seventy-nine".