7220901 has 8 divisors (see below), whose sum is σ = 9689824. Its totient is φ = 4782960.

The previous prime is 7220897. The next prime is 7220921. The reversal of 7220901 is 1090227.

It is a happy number.

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

It is not a de Polignac number, because 7220901 - 2² = 7220897 is a prime.

It is a super-2 number, since 2×7220901² = 104282822503602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7195 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (1211228).

Almost surely, 2^7220901 is an apocalyptic number.

It is an amenable number.

7220901 is a deficient number, since it is larger than the sum of its proper divisors (2468923).

7220901 is a wasteful number, since it uses less digits than its factorization.

7220901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15491.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 7220901 is about 2687.1734220180. The cubic root of 7220901 is about 193.2845454248.

The spelling of 7220901 in words is "seven million, two hundred twenty thousand, nine hundred one".