2131110222231 has 4 divisors (see below), whose sum is σ = 2841480296312. Its totient is φ = 1420740148152.

The previous prime is 2131110222191. The next prime is 2131110222251. The reversal of 2131110222231 is 1322220111312.

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

It is not a de Polignac number, because 2131110222231 - 2⁶ = 2131110222167 is a prime.

It is a super-2 number, since 2×2131110222231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131110222198 and 2131110222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131110222251) 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, 355185037036 + ... + 355185037041.

It is an arithmetic number, because the mean of its divisors is an integer number (710370074078).

Almost surely, 2^{2131110222231} is an apocalyptic number.

2131110222231 is a deficient number, since it is larger than the sum of its proper divisors (710370074081).

2131110222231 is an equidigital number, since it uses as much as digits as its factorization.

2131110222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710370074080.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2131110222231 its reverse (1322220111312), we get a palindrome (3453330333543).

The spelling of 2131110222231 in words is "two trillion, one hundred thirty-one billion, one hundred ten million, two hundred twenty-two thousand, two hundred thirty-one".