1207221 has 8 divisors (see below), whose sum is σ = 1704384. Its totient is φ = 757440.

The previous prime is 1207211. The next prime is 1207223. The reversal of 1207221 is 1227021.

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

It is not a de Polignac number, because 1207221 - 2⁷ = 1207093 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1207221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1207223) 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, 11785 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (213048).

2^1207221 is an apocalyptic number.

It is an amenable number.

1207221 is a deficient number, since it is larger than the sum of its proper divisors (497163).

1207221 is a wasteful number, since it uses less digits than its factorization.

1207221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23691.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1207221 is about 1098.7360920621. The cubic root of 1207221 is about 106.4785823933.

The spelling of 1207221 in words is "one million, two hundred seven thousand, two hundred twenty-one".