221094653 has 32 divisors (see below), whose sum is σ = 257402880. Its totient is φ = 188337600.

The previous prime is 221094649. The next prime is 221094661. The reversal of 221094653 is 356490122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221094653 - 2² = 221094649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221094253) 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 31 ways as a sum of consecutive naturals, for example, 1464128 + ... + 1464278.

It is an arithmetic number, because the mean of its divisors is an integer number (8043840).

Almost surely, 2^221094653 is an apocalyptic number.

221094653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221094653 is a deficient number, since it is larger than the sum of its proper divisors (36308227).

221094653 is a wasteful number, since it uses less digits than its factorization.

221094653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 221094653 is about 14869.2519314187. The cubic root of 221094653 is about 604.6806620174.

It can be divided in two parts, 22109 and 4653, that added together give a palindrome (26762).

The spelling of 221094653 in words is "two hundred twenty-one million, ninety-four thousand, six hundred fifty-three".