10221669 has 12 divisors (see below), whose sum is σ = 15125292. Its totient is φ = 6648000.

The previous prime is 10221649. The next prime is 10221671. The reversal of 10221669 is 96612201.

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 8191044 = 1425^2 + 2862^2 .

It is not a de Polignac number, because 10221669 - 2⁹ = 10221157 is a prime.

It is a super-2 number, since 2×10221669² = 208965034291122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13482 + ... + 14219.

It is an arithmetic number, because the mean of its divisors is an integer number (1260441).

Almost surely, 2^10221669 is an apocalyptic number.

It is an amenable number.

10221669 is a deficient number, since it is larger than the sum of its proper divisors (4903623).

10221669 is a wasteful number, since it uses less digits than its factorization.

10221669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27748 (or 27745 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10221669 is about 3197.1344982656. The cubic root of 10221669 is about 217.0237538326.

The spelling of 10221669 in words is "ten million, two hundred twenty-one thousand, six hundred sixty-nine".