233112221131 has 4 divisors (see below), whose sum is σ = 233121599352. Its totient is φ = 233102842912.

The previous prime is 233112221117. The next prime is 233112221143. The reversal of 233112221131 is 131122211332.

233112221131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 233112221131 - 2¹¹ = 233112219083 is a prime.

It is a super-2 number, since 2×233112221131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233112221431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4651726 + ... + 4701571.

It is an arithmetic number, because the mean of its divisors is an integer number (58280399838).

Almost surely, 2^233112221131 is an apocalyptic number.

233112221131 is a deficient number, since it is larger than the sum of its proper divisors (9378221).

233112221131 is an equidigital number, since it uses as much as digits as its factorization.

233112221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378220.

The product of its digits is 432, while the sum is 22.

Adding to 233112221131 its reverse (131122211332), we get a palindrome (364234432463).

It can be divided in two parts, 2 and 33112221131, that added together give a palindrome (33112221133).

The spelling of 233112221131 in words is "two hundred thirty-three billion, one hundred twelve million, two hundred twenty-one thousand, one hundred thirty-one".