1211122079 has 2 divisors, whose sum is σ = 1211122080. Its totient is φ = 1211122078.

The previous prime is 1211122069. The next prime is 1211122097. The reversal of 1211122079 is 9702211121.

Together with next prime (1211122097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211122079 - 2⁸ = 1211121823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211122019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605561039 + 605561040.

It is an arithmetic number, because the mean of its divisors is an integer number (605561040).

Almost surely, 2^1211122079 is an apocalyptic number.

1211122079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211122079 is an equidigital number, since it uses as much as digits as its factorization.

1211122079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1211122079 is about 34801.1792759958. The cubic root of 1211122079 is about 1065.9315261549.

The spelling of 1211122079 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, seventy-nine".