1245122231 has 8 divisors (see below), whose sum is σ = 1311313200. Its totient is φ = 1178997120.

The previous prime is 1245122201. The next prime is 1245122251. The reversal of 1245122231 is 1322215421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1245122231 - 2²⁶ = 1178013367 is a prime.

It is a super-2 number, since 2×1245122231² = 3100658740260834722, 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 = 1245122197 and 1245122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25061 + ... + 55841.

It is an arithmetic number, because the mean of its divisors is an integer number (163914150).

Almost surely, 2^1245122231 is an apocalyptic number.

1245122231 is a deficient number, since it is larger than the sum of its proper divisors (66190969).

1245122231 is a wasteful number, since it uses less digits than its factorization.

1245122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32929.

The product of its digits is 960, while the sum is 23.

The square root of 1245122231 is about 35286.2895612446. The cubic root of 1245122231 is about 1075.8143405227.

Adding to 1245122231 its reverse (1322215421), we get a palindrome (2567337652).

The spelling of 1245122231 in words is "one billion, two hundred forty-five million, one hundred twenty-two thousand, two hundred thirty-one".