1207144221 has 4 divisors (see below), whose sum is σ = 1609525632. Its totient is φ = 804762812.

The previous prime is 1207144219. The next prime is 1207144229. The reversal of 1207144221 is 1224417021.

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 1207144221 - 2¹ = 1207144219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1207144191 and 1207144200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1207144229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201190701 + ... + 201190706.

It is an arithmetic number, because the mean of its divisors is an integer number (402381408).

Almost surely, 2^1207144221 is an apocalyptic number.

It is an amenable number.

1207144221 is a deficient number, since it is larger than the sum of its proper divisors (402381411).

1207144221 is an equidigital number, since it uses as much as digits as its factorization.

1207144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402381410.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1207144221 is about 34743.9810758641. The cubic root of 1207144221 is about 1064.7632500700.

The spelling of 1207144221 in words is "one billion, two hundred seven million, one hundred forty-four thousand, two hundred twenty-one".