2131322222 has 4 divisors (see below), whose sum is σ = 3196983336. Its totient is φ = 1065661110.

The previous prime is 2131322213. The next prime is 2131322269. The reversal of 2131322222 is 2222231312.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2131322194 and 2131322203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532830554 + ... + 532830557.

It is an arithmetic number, because the mean of its divisors is an integer number (799245834).

Almost surely, 2^2131322222 is an apocalyptic number.

2131322222 is a deficient number, since it is larger than the sum of its proper divisors (1065661114).

2131322222 is a wasteful number, since it uses less digits than its factorization.

2131322222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065661113.

The product of its digits is 576, while the sum is 20.

The square root of 2131322222 is about 46166.2454830366. The cubic root of 2131322222 is about 1286.9145300746.

Adding to 2131322222 its reverse (2222231312), we get a palindrome (4353553534).

The spelling of 2131322222 in words is "two billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty-two".