221051104 has 12 divisors (see below), whose sum is σ = 435194424. Its totient is φ = 110525536.

The previous prime is 221051101. The next prime is 221051113. The reversal of 221051104 is 401150122.

221051104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221051101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453892 + ... + 3453955.

It is an arithmetic number, because the mean of its divisors is an integer number (36266202).

Almost surely, 2^221051104 is an apocalyptic number.

It is an amenable number.

221051104 is a deficient number, since it is larger than the sum of its proper divisors (214143320).

221051104 is an equidigital number, since it uses as much as digits as its factorization.

221051104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907857 (or 6907849 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 221051104 is about 14867.7874614887. The cubic root of 221051104 is about 604.6409581064.

The spelling of 221051104 in words is "two hundred twenty-one million, fifty-one thousand, one hundred four".