1222143432 has 32 divisors (see below), whose sum is σ = 3056438400. Its totient is φ = 407237184.

The previous prime is 1222143431. The next prime is 1222143467. The reversal of 1222143432 is 2343412221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1222143431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77169 + ... + 91647.

It is an arithmetic number, because the mean of its divisors is an integer number (95513700).

Almost surely, 2^1222143432 is an apocalyptic number.

1222143432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222143432 is an abundant number, since it is smaller than the sum of its proper divisors (1834294968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222143432 is a wasteful number, since it uses less digits than its factorization.

1222143432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18005 (or 18001 counting only the distinct ones).

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

The square root of 1222143432 is about 34959.1680679046. The cubic root of 1222143432 is about 1069.1551347465.

Adding to 1222143432 its reverse (2343412221), we get a palindrome (3565555653).

The spelling of 1222143432 in words is "one billion, two hundred twenty-two million, one hundred forty-three thousand, four hundred thirty-two".