1222243143 has 48 divisors (see below), whose sum is σ = 1833995520. Its totient is φ = 723331840.

The previous prime is 1222243133. The next prime is 1222243157. The reversal of 1222243143 is 3413422221.

It is a happy number.

It is not a de Polignac number, because 1222243143 - 2¹⁸ = 1221980999 is a prime.

It is a super-2 number, since 2×1222243143² = 2987756601221036898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222243103) 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 47 ways as a sum of consecutive naturals, for example, 3404398 + ... + 3404756.

It is an arithmetic number, because the mean of its divisors is an integer number (38208240).

Almost surely, 2^1222243143 is an apocalyptic number.

1222243143 is a deficient number, since it is larger than the sum of its proper divisors (611752377).

1222243143 is a wasteful number, since it uses less digits than its factorization.

1222243143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 569 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1222243143 is about 34960.5941454089. The cubic root of 1222243143 is about 1069.1842103377.

Adding to 1222243143 its reverse (3413422221), we get a palindrome (4635665364).

The spelling of 1222243143 in words is "one billion, two hundred twenty-two million, two hundred forty-three thousand, one hundred forty-three".