1204201221 has 8 divisors (see below), whose sum is σ = 1606637760. Its totient is φ = 802282752.

The previous prime is 1204201217. The next prime is 1204201253. The reversal of 1204201221 is 1221024021.

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

It is not a de Polignac number, because 1204201221 - 2² = 1204201217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1204201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204201291) 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, 124060 + ... + 133413.

It is an arithmetic number, because the mean of its divisors is an integer number (200829720).

Almost surely, 2^1204201221 is an apocalyptic number.

It is an amenable number.

1204201221 is a deficient number, since it is larger than the sum of its proper divisors (402436539).

1204201221 is a wasteful number, since it uses less digits than its factorization.

1204201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259035.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1204201221 is about 34701.6025710629. The cubic root of 1204201221 is about 1063.8972535025.

Adding to 1204201221 its reverse (1221024021), we get a palindrome (2425225242).

The spelling of 1204201221 in words is "one billion, two hundred four million, two hundred one thousand, two hundred twenty-one".