10221429 has 4 divisors (see below), whose sum is σ = 13628576. Its totient is φ = 6814284.

The previous prime is 10221397. The next prime is 10221443. The reversal of 10221429 is 92412201.

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 not a de Polignac number, because 10221429 - 2⁵ = 10221397 is a prime.

It is a super-2 number, since 2×10221429² = 208955221604082, 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 (10221469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703569 + ... + 1703574.

It is an arithmetic number, because the mean of its divisors is an integer number (3407144).

Almost surely, 2^10221429 is an apocalyptic number.

It is an amenable number.

10221429 is a deficient number, since it is larger than the sum of its proper divisors (3407147).

10221429 is an equidigital number, since it uses as much as digits as its factorization.

10221429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407146.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10221429 is about 3197.0969644351. The cubic root of 10221429 is about 217.0220552806.

The spelling of 10221429 in words is "ten million, two hundred twenty-one thousand, four hundred twenty-nine".