1222330231 has 4 divisors (see below), whose sum is σ = 1222400200. Its totient is φ = 1222260264.

The previous prime is 1222330201. The next prime is 1222330247. The reversal of 1222330231 is 1320332221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1320332221 = 13 ⋅101564017.

It is a cyclic number.

It is not a de Polignac number, because 1222330231 - 2¹¹ = 1222328183 is a prime.

It is a super-2 number, since 2×1222330231² = 2988182387233026722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222330199 and 1222330208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222330201) 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, 15625 + ... + 51853.

It is an arithmetic number, because the mean of its divisors is an integer number (305600050).

Almost surely, 2^1222330231 is an apocalyptic number.

1222330231 is a deficient number, since it is larger than the sum of its proper divisors (69969).

1222330231 is an equidigital number, since it uses as much as digits as its factorization.

1222330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69968.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1222330231 is about 34961.8396398130. The cubic root of 1222330231 is about 1069.2096037857.

Adding to 1222330231 its reverse (1320332221), we get a palindrome (2542662452).

The spelling of 1222330231 in words is "one billion, two hundred twenty-two million, three hundred thirty thousand, two hundred thirty-one".