2131122011233 has 8 divisors (see below), whose sum is σ = 2152313018856. Its totient is φ = 2109932784000.

The previous prime is 2131122011203. The next prime is 2131122011243. The reversal of 2131122011233 is 3321102211312.

It can be written as a sum of positive squares in 4 ways, for example, as 1170265276944 + 960856734289 = 1081788^2 + 980233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131122011233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131122011203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028813 + ... + 2894533.

It is an arithmetic number, because the mean of its divisors is an integer number (269039127357).

Almost surely, 2^{2131122011233} is an apocalyptic number.

It is an amenable number.

2131122011233 is a deficient number, since it is larger than the sum of its proper divisors (21191007623).

2131122011233 is a wasteful number, since it uses less digits than its factorization.

2131122011233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890195.

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

Adding to 2131122011233 its reverse (3321102211312), we get a palindrome (5452224222545).

The spelling of 2131122011233 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-two million, eleven thousand, two hundred thirty-three".