221054111 has 8 divisors (see below), whose sum is σ = 234187920. Its totient is φ = 207934848.

The previous prime is 221054101. The next prime is 221054123. The reversal of 221054111 is 111450122.

221054111 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 a cyclic number.

It is not a de Polignac number, because 221054111 - 2²² = 216859807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 221054111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221054101) 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, 52880 + ... + 56906.

It is an arithmetic number, because the mean of its divisors is an integer number (29273490).

Almost surely, 2^221054111 is an apocalyptic number.

221054111 is a deficient number, since it is larger than the sum of its proper divisors (13133809).

221054111 is a wasteful number, since it uses less digits than its factorization.

221054111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 221054111 is about 14867.8885858080. Note that the first 3 decimals coincide. The cubic root of 221054111 is about 604.6436997757.

The spelling of 221054111 in words is "two hundred twenty-one million, fifty-four thousand, one hundred eleven".