221340093 has 64 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 123943680.

The previous prime is 221340079. The next prime is 221340127. The reversal of 221340093 is 390043122.

It is not a de Polignac number, because 221340093 - 2⁶ = 221340029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221340043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2068546 + ... + 2068652.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^221340093 is an apocalyptic number.

It is an amenable number.

221340093 is a deficient number, since it is larger than the sum of its proper divisors (127024707).

221340093 is a wasteful number, since it uses less digits than its factorization.

221340093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 221340093 is about 14877.5029154761. The cubic root of 221340093 is about 604.9043338478.

The spelling of 221340093 in words is "two hundred twenty-one million, three hundred forty thousand, ninety-three".