11333212120231 has 4 divisors (see below), whose sum is σ = 11724012538200. Its totient is φ = 10942411702264.

The previous prime is 11333212120207. The next prime is 11333212120361. The reversal of 11333212120231 is 13202121233311.

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 11333212120231 - 2³⁷ = 11195773166759 is a prime.

It is a super-2 number, since 2×11333212120231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11333212120196 and 11333212120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11333212129231) 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, 195400208941 + ... + 195400208998.

It is an arithmetic number, because the mean of its divisors is an integer number (2931003134550).

Almost surely, 2^{11333212120231} is an apocalyptic number.

11333212120231 is a deficient number, since it is larger than the sum of its proper divisors (390800417969).

11333212120231 is an equidigital number, since it uses as much as digits as its factorization.

11333212120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390800417968.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11333212120231 its reverse (13202121233311), we get a palindrome (24535333353542).

The spelling of 11333212120231 in words is "eleven trillion, three hundred thirty-three billion, two hundred twelve million, one hundred twenty thousand, two hundred thirty-one".