1244222133 has 32 divisors (see below), whose sum is σ = 2072159232. Its totient is φ = 645148800.

The previous prime is 1244222101. The next prime is 1244222143. The reversal of 1244222133 is 3312224421.

It is a happy number.

It is not a de Polignac number, because 1244222133 - 2⁵ = 1244222101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244222143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127185 + ... + 136617.

It is an arithmetic number, because the mean of its divisors is an integer number (64754976).

Almost surely, 2^1244222133 is an apocalyptic number.

It is an amenable number.

1244222133 is a deficient number, since it is larger than the sum of its proper divisors (827937099).

1244222133 is a wasteful number, since it uses less digits than its factorization.

1244222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025.

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

The square root of 1244222133 is about 35273.5330382427. The cubic root of 1244222133 is about 1075.5550428830. Note that the first 3 decimals are identical.

Adding to 1244222133 its reverse (3312224421), we get a palindrome (4556446554).

The spelling of 1244222133 in words is "one billion, two hundred forty-four million, two hundred twenty-two thousand, one hundred thirty-three".