1011321400279 has 2 divisors, whose sum is σ = 1011321400280. Its totient is φ = 1011321400278.

The previous prime is 1011321400237. The next prime is 1011321400333. The reversal of 1011321400279 is 9720041231101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011321400279 - 2¹⁷ = 1011321269207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011321400279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011321400879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505660700139 + 505660700140.

It is an arithmetic number, because the mean of its divisors is an integer number (505660700140).

Almost surely, 2^{1011321400279} is an apocalyptic number.

1011321400279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011321400279 is an equidigital number, since it uses as much as digits as its factorization.

1011321400279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 1011321400279 in words is "one trillion, eleven billion, three hundred twenty-one million, four hundred thousand, two hundred seventy-nine".