11285911021391 has 2 divisors, whose sum is σ = 11285911021392. Its totient is φ = 11285911021390.

The previous prime is 11285911021373. The next prime is 11285911021409. The reversal of 11285911021391 is 19312011958211.

It is a balanced prime because it is at equal distance from previous prime (11285911021373) and next prime (11285911021409).

It is a cyclic number.

It is not a de Polignac number, because 11285911021391 - 2¹⁰ = 11285911020367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11285911021321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642955510695 + 5642955510696.

It is an arithmetic number, because the mean of its divisors is an integer number (5642955510696).

Almost surely, 2^{11285911021391} is an apocalyptic number.

11285911021391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11285911021391 is an equidigital number, since it uses as much as digits as its factorization.

11285911021391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 44.

The spelling of 11285911021391 in words is "eleven trillion, two hundred eighty-five billion, nine hundred eleven million, twenty-one thousand, three hundred ninety-one".