222131111231 has 4 divisors (see below), whose sum is σ = 222134398200. Its totient is φ = 222127824264.

The previous prime is 222131111203. The next prime is 222131111243. The reversal of 222131111231 is 132111131222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222131111231 is a prime.

It is a super-3 number, since 3×222131111231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222131111281) 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, 1539941 + ... + 1677998.

It is an arithmetic number, because the mean of its divisors is an integer number (55533599550).

Almost surely, 2^222131111231 is an apocalyptic number.

222131111231 is a deficient number, since it is larger than the sum of its proper divisors (3286969).

222131111231 is an equidigital number, since it uses as much as digits as its factorization.

222131111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286968.

The product of its digits is 144, while the sum is 20.

Adding to 222131111231 its reverse (132111131222), we get a palindrome (354242242453).

The spelling of 222131111231 in words is "two hundred twenty-two billion, one hundred thirty-one million, one hundred eleven thousand, two hundred thirty-one".