2131212132233 has 24 divisors (see below), whose sum is σ = 2194573921176. Its totient is φ = 2069626890240.

The previous prime is 2131212132223. The next prime is 2131212132271. The reversal of 2131212132233 is 3322312121312.

It can be written as a sum of positive squares in 12 ways, for example, as 404124661264 + 1727087470969 = 635708^2 + 1314187^2 .

It is not a de Polignac number, because 2131212132233 - 2⁶ = 2131212132169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2131212132223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383515691 + ... + 383521247.

It is an arithmetic number, because the mean of its divisors is an integer number (91440580049).

Almost surely, 2^{2131212132233} is an apocalyptic number.

It is an amenable number.

2131212132233 is a deficient number, since it is larger than the sum of its proper divisors (63361788943).

2131212132233 is an equidigital number, since it uses as much as digits as its factorization.

2131212132233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6653 (or 6612 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

Adding to 2131212132233 its reverse (3322312121312), we get a palindrome (5453524253545).

The spelling of 2131212132233 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, one hundred thirty-two thousand, two hundred thirty-three".