1222231143 has 16 divisors (see below), whose sum is σ = 1871907840. Its totient is φ = 694870176.

The previous prime is 1222231117. The next prime is 1222231151. The reversal of 1222231143 is 3411322221.

It is not a de Polignac number, because 1222231143 - 2¹⁴ = 1222214759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222231103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143583 + ... + 151856.

It is an arithmetic number, because the mean of its divisors is an integer number (116994240).

Almost surely, 2^1222231143 is an apocalyptic number.

1222231143 is a deficient number, since it is larger than the sum of its proper divisors (649676697).

1222231143 is a wasteful number, since it uses less digits than its factorization.

1222231143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295646.

The product of its digits is 576, while the sum is 21.

The square root of 1222231143 is about 34960.4225231904. The cubic root of 1222231143 is about 1069.1807112378.

Adding to 1222231143 its reverse (3411322221), we get a palindrome (4633553364).

It can be divided in two parts, 12222 and 31143, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 1222231143 in words is "one billion, two hundred twenty-two million, two hundred thirty-one thousand, one hundred forty-three".