1233222144 has 160 divisors (see below), whose sum is σ = 4096452096. Its totient is φ = 320286720.

The previous prime is 1233222139. The next prime is 1233222229. The reversal of 1233222144 is 4412223321.

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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113059 + ... + 123485.

Almost surely, 2^1233222144 is an apocalyptic number.

1233222144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1233222144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2048226048).

1233222144 is an abundant number, since it is smaller than the sum of its proper divisors (2863229952).

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

1233222144 is a wasteful number, since it uses less digits than its factorization.

1233222144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466 (or 10450 counting only the distinct ones).

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

The square root of 1233222144 is about 35117.2627634900. The cubic root of 1233222144 is about 1072.3760468785.

Adding to 1233222144 its reverse (4412223321), we get a palindrome (5645445465).

The spelling of 1233222144 in words is "one billion, two hundred thirty-three million, two hundred twenty-two thousand, one hundred forty-four".