11231212159 has 2 divisors, whose sum is σ = 11231212160. Its totient is φ = 11231212158.

The previous prime is 11231212127. The next prime is 11231212169. The reversal of 11231212159 is 95121213211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11231212159 - 2⁵ = 11231212127 is a prime.

It is a super-2 number, since 2×11231212159² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11231212169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615606079 + 5615606080.

It is an arithmetic number, because the mean of its divisors is an integer number (5615606080).

Almost surely, 2^11231212159 is an apocalyptic number.

11231212159 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231212159 is an equidigital number, since it uses as much as digits as its factorization.

11231212159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 28.

The spelling of 11231212159 in words is "eleven billion, two hundred thirty-one million, two hundred twelve thousand, one hundred fifty-nine".