2131022213233 has 4 divisors (see below), whose sum is σ = 2131478246628. Its totient is φ = 2130566179840.

The previous prime is 2131022213231. The next prime is 2131022213251. The reversal of 2131022213233 is 3323122201312.

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 867751867024 + 1263270346209 = 931532^2 + 1123953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131022213233 - 2¹ = 2131022213231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131022213198 and 2131022213207.

It is not an unprimeable number, because it can be changed into a prime (2131022213231) 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, 228009688 + ... + 228019033.

It is an arithmetic number, because the mean of its divisors is an integer number (532869561657).

Almost surely, 2^{2131022213233} is an apocalyptic number.

It is an amenable number.

2131022213233 is a deficient number, since it is larger than the sum of its proper divisors (456033395).

2131022213233 is an equidigital number, since it uses as much as digits as its factorization.

2131022213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456033394.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2131022213233 its reverse (3323122201312), we get a palindrome (5454144414545).

The spelling of 2131022213233 in words is "two trillion, one hundred thirty-one billion, twenty-two million, two hundred thirteen thousand, two hundred thirty-three".