1222251443 has 24 divisors (see below), whose sum is σ = 1444462992. Its totient is φ = 1031050944.

The previous prime is 1222251427. The next prime is 1222251461. The reversal of 1222251443 is 3441522221.

It is not a de Polignac number, because 1222251443 - 2⁴ = 1222251427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222251413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1614221 + ... + 1614977.

It is an arithmetic number, because the mean of its divisors is an integer number (60185958).

Almost surely, 2^1222251443 is an apocalyptic number.

1222251443 is a deficient number, since it is larger than the sum of its proper divisors (222211549).

1222251443 is an equidigital number, since it uses as much as digits as its factorization.

1222251443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1244 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1222251443 is about 34960.7128502838. The cubic root of 1222251443 is about 1069.1866305351.

Adding to 1222251443 its reverse (3441522221), we get a palindrome (4663773664).

The spelling of 1222251443 in words is "one billion, two hundred twenty-two million, two hundred fifty-one thousand, four hundred forty-three".