10869221 has 4 divisors (see below), whose sum is σ = 11857344. Its totient is φ = 9881100.

The previous prime is 10869211. The next prime is 10869227. The reversal of 10869221 is 12296801.

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 10869221 - 2²² = 6674917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10869227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494045 + ... + 494066.

It is an arithmetic number, because the mean of its divisors is an integer number (2964336).

Almost surely, 2^10869221 is an apocalyptic number.

10869221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10869221 is a deficient number, since it is larger than the sum of its proper divisors (988123).

10869221 is an equidigital number, since it uses as much as digits as its factorization.

10869221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988122.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 10869221 is about 3296.8501634136. The cubic root of 10869221 is about 221.5131296496.

The spelling of 10869221 in words is "ten million, eight hundred sixty-nine thousand, two hundred twenty-one".