10902221 has 8 divisors (see below), whose sum is σ = 11993088. Its totient is φ = 9909900.

The previous prime is 10902217. The next prime is 10902223. The reversal of 10902221 is 12220901.

It is not a de Polignac number, because 10902221 - 2² = 10902217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10902221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10902223) 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, 2765 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (1499136).

Almost surely, 2^10902221 is an apocalyptic number.

10902221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10902221 is a deficient number, since it is larger than the sum of its proper divisors (1090867).

10902221 is an frugal number, since it uses more digits than its factorization.

10902221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224 (or 8202 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 10902221 is about 3301.8511474626. The cubic root of 10902221 is about 221.7370815422.

The spelling of 10902221 in words is "ten million, nine hundred two thousand, two hundred twenty-one".