1111121320279 has 2 divisors, whose sum is σ = 1111121320280. Its totient is φ = 1111121320278.

The previous prime is 1111121320157. The next prime is 1111121320319. The reversal of 1111121320279 is 9720231211111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111121320279 - 2⁷ = 1111121320151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111121320279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111121324279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555560660139 + 555560660140.

It is an arithmetic number, because the mean of its divisors is an integer number (555560660140).

Almost surely, 2^{1111121320279} is an apocalyptic number.

1111121320279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111121320279 is an equidigital number, since it uses as much as digits as its factorization.

1111121320279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 1111121320279 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, three hundred twenty thousand, two hundred seventy-nine".