1244122001 has 4 divisors (see below), whose sum is σ = 1245171312. Its totient is φ = 1243072692.

The previous prime is 1244121997. The next prime is 1244122031. The reversal of 1244122001 is 1002214421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1244122001 - 2² = 1244121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244122031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522875 + ... + 525248.

It is an arithmetic number, because the mean of its divisors is an integer number (311292828).

Almost surely, 2^1244122001 is an apocalyptic number.

It is an amenable number.

1244122001 is a deficient number, since it is larger than the sum of its proper divisors (1049311).

1244122001 is a wasteful number, since it uses less digits than its factorization.

1244122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049310.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1244122001 is about 35272.1136452014. The cubic root of 1244122001 is about 1075.5261894160.

Adding to 1244122001 its reverse (1002214421), we get a palindrome (2246336422).

The spelling of 1244122001 in words is "one billion, two hundred forty-four million, one hundred twenty-two thousand, one".