2131122233 has 4 divisors (see below), whose sum is σ = 2131245300. Its totient is φ = 2130999168.

The previous prime is 2131122229. The next prime is 2131122241. The reversal of 2131122233 is 3322211312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1721586064 + 409536169 = 41492^2 + 20237^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131122233 - 2² = 2131122229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131122223) 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, 30260 + ... + 71957.

It is an arithmetic number, because the mean of its divisors is an integer number (532811325).

Almost surely, 2^2131122233 is an apocalyptic number.

It is an amenable number.

2131122233 is a deficient number, since it is larger than the sum of its proper divisors (123067).

2131122233 is a wasteful number, since it uses less digits than its factorization.

2131122233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123066.

The product of its digits is 432, while the sum is 20.

The square root of 2131122233 is about 46164.0794666156. The cubic root of 2131122233 is about 1286.8742770027.

Adding to 2131122233 its reverse (3322211312), we get a palindrome (5453333545).

The spelling of 2131122233 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred thirty-three".