221030029 has 8 divisors (see below), whose sum is σ = 244520640. Its totient is φ = 198105600.

The previous prime is 221030009. The next prime is 221030053. The reversal of 221030029 is 920030122.

It is a happy number.

221030029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221030029 - 2²⁵ = 187475597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221029988 and 221030015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140724 + ... + 142285.

It is an arithmetic number, because the mean of its divisors is an integer number (30565080).

Almost surely, 2^221030029 is an apocalyptic number.

It is an amenable number.

221030029 is a deficient number, since it is larger than the sum of its proper divisors (23490611).

221030029 is a wasteful number, since it uses less digits than its factorization.

221030029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283091.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 221030029 is about 14867.0786975788. The cubic root of 221030029 is about 604.6217420172.

The spelling of 221030029 in words is "two hundred twenty-one million, thirty thousand, twenty-nine".