2221429 has 16 divisors (see below), whose sum is σ = 2718720. Its totient is φ = 1774080.

The previous prime is 2221411. The next prime is 2221433. The reversal of 2221429 is 9241222.

It is not a de Polignac number, because 2221429 - 2⁷ = 2221301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6117 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (169920).

2^2221429 is an apocalyptic number.

2221429 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2221429 is a deficient number, since it is larger than the sum of its proper divisors (497291).

2221429 is a wasteful number, since it uses less digits than its factorization.

2221429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 576, while the sum is 22.

The square root of 2221429 is about 1490.4459064320. The cubic root of 2221429 is about 130.4800593911.

The spelling of 2221429 in words is "two million, two hundred twenty-one thousand, four hundred twenty-nine".