11821023139 has 2 divisors, whose sum is σ = 11821023140. Its totient is φ = 11821023138.

The previous prime is 11821023131. The next prime is 11821023163. The reversal of 11821023139 is 93132012811.

It is a weak prime.

It is an emirp because it is prime and its reverse (93132012811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11821023139 - 2³ = 11821023131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11821023139.

It is not a weakly prime, because it can be changed into another prime (11821023131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910511569 + 5910511570.

It is an arithmetic number, because the mean of its divisors is an integer number (5910511570).

Almost surely, 2^11821023139 is an apocalyptic number.

11821023139 is a deficient number, since it is larger than the sum of its proper divisors (1).

11821023139 is an equidigital number, since it uses as much as digits as its factorization.

11821023139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 11821023139 in words is "eleven billion, eight hundred twenty-one million, twenty-three thousand, one hundred thirty-nine".