11959833211 has 4 divisors (see below), whose sum is σ = 11962826424. Its totient is φ = 11956840000.

The previous prime is 11959833113. The next prime is 11959833229. The reversal of 11959833211 is 11233895911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11959833211 - 2¹⁵ = 11959800443 is a prime.

It is a super-2 number, since 2×11959833211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11959833241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1490605 + ... + 1498606.

It is an arithmetic number, because the mean of its divisors is an integer number (2990706606).

Almost surely, 2^11959833211 is an apocalyptic number.

11959833211 is a deficient number, since it is larger than the sum of its proper divisors (2993213).

11959833211 is an equidigital number, since it uses as much as digits as its factorization.

11959833211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993212.

The product of its digits is 58320, while the sum is 43.

The spelling of 11959833211 in words is "eleven billion, nine hundred fifty-nine million, eight hundred thirty-three thousand, two hundred eleven".