221010429 has 8 divisors (see below), whose sum is σ = 294750720. Its totient is φ = 147305216.

The previous prime is 221010397. The next prime is 221010431. The reversal of 221010429 is 924010122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221010429 - 2⁵ = 221010397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010469) 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 7 ways as a sum of consecutive naturals, for example, 15652 + ... + 26210.

It is an arithmetic number, because the mean of its divisors is an integer number (36843840).

Almost surely, 2^221010429 is an apocalyptic number.

It is an amenable number.

221010429 is a deficient number, since it is larger than the sum of its proper divisors (73740291).

221010429 is a wasteful number, since it uses less digits than its factorization.

221010429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17539.

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

The square root of 221010429 is about 14866.4195084089. The cubic root of 221010429 is about 604.6038697301.

The spelling of 221010429 in words is "two hundred twenty-one million, ten thousand, four hundred twenty-nine".