1224120001 has 16 divisors (see below), whose sum is σ = 1371092800. Its totient is φ = 1085555520.

The previous prime is 1224119993. The next prime is 1224120013. The reversal of 1224120001 is 1000214221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1224120001 - 2³ = 1224119993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224120061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16150 + ... + 52048.

It is an arithmetic number, because the mean of its divisors is an integer number (85693300).

Almost surely, 2^1224120001 is an apocalyptic number.

It is an amenable number.

1224120001 is a deficient number, since it is larger than the sum of its proper divisors (146972799).

1224120001 is a wasteful number, since it uses less digits than its factorization.

1224120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1224120001 is about 34987.4263271822. The cubic root of 1224120001 is about 1069.7312047906.

Adding to 1224120001 its reverse (1000214221), we get a palindrome (2224334222).

The spelling of 1224120001 in words is "one billion, two hundred twenty-four million, one hundred twenty thousand, one".