1244221231 has 8 divisors (see below), whose sum is σ = 1371326544. Its totient is φ = 1119448320.

The previous prime is 1244221229. The next prime is 1244221241. The reversal of 1244221231 is 1321224421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244221231 - 2¹ = 1244221229 is a prime.

It is a super-2 number, since 2×1244221231² = 3096172943342310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244221241) 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, 581980 + ... + 584113.

It is an arithmetic number, because the mean of its divisors is an integer number (171415818).

Almost surely, 2^1244221231 is an apocalyptic number.

1244221231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1244221231 is a deficient number, since it is larger than the sum of its proper divisors (127105313).

1244221231 is a wasteful number, since it uses less digits than its factorization.

1244221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166201.

The product of its digits is 768, while the sum is 22.

The square root of 1244221231 is about 35273.5202524500. The cubic root of 1244221231 is about 1075.5547829747.

Adding to 1244221231 its reverse (1321224421), we get a palindrome (2565445652).

The spelling of 1244221231 in words is "one billion, two hundred forty-four million, two hundred twenty-one thousand, two hundred thirty-one".