221153023 has 16 divisors (see below), whose sum is σ = 277748800. Its totient is φ = 174974688.

The previous prime is 221153003. The next prime is 221153029. The reversal of 221153023 is 320351122.

It is not a de Polignac number, because 221153023 - 2⁵ = 221152991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221153029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20340 + ... + 29257.

It is an arithmetic number, because the mean of its divisors is an integer number (17359300).

Almost surely, 2^221153023 is an apocalyptic number.

221153023 is a deficient number, since it is larger than the sum of its proper divisors (56595777).

221153023 is an equidigital number, since it uses as much as digits as its factorization.

221153023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49631 (or 49617 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 221153023 is about 14871.2145771621. The cubic root of 221153023 is about 604.7338701558.

The spelling of 221153023 in words is "two hundred twenty-one million, one hundred fifty-three thousand, twenty-three".