1231232222 has 32 divisors (see below), whose sum is σ = 2051481600. Its totient is φ = 549525600.

The previous prime is 1231232183. The next prime is 1231232231. The reversal of 1231232222 is 2222321321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1231232194 and 1231232203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330104 + ... + 333812.

It is an arithmetic number, because the mean of its divisors is an integer number (64108800).

Almost surely, 2^1231232222 is an apocalyptic number.

1231232222 is a deficient number, since it is larger than the sum of its proper divisors (820249378).

1231232222 is a wasteful number, since it uses less digits than its factorization.

1231232222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992.

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

The square root of 1231232222 is about 35088.9187921201. The cubic root of 1231232222 is about 1071.7989425552.

Adding to 1231232222 its reverse (2222321321), we get a palindrome (3453553543).

The spelling of 1231232222 in words is "one billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-two".