221109030 has 24 divisors (see below), whose sum is σ = 574883712. Its totient is φ = 58962384.

The previous prime is 221109017. The next prime is 221109067. The reversal of 221109030 is 30901122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221108994 and 221109012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1228294 + ... + 1228473.

It is an arithmetic number, because the mean of its divisors is an integer number (23953488).

Almost surely, 2^221109030 is an apocalyptic number.

221109030 is an abundant number, since it is smaller than the sum of its proper divisors (353774682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221109030 is a wasteful number, since it uses less digits than its factorization.

221109030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456780 (or 2456777 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 221109030 is about 14869.7353708800. The cubic root of 221109030 is about 604.6937684786.

The spelling of 221109030 in words is "two hundred twenty-one million, one hundred nine thousand, thirty".