221120590 has 16 divisors (see below), whose sum is σ = 398466720. Its totient is φ = 88348320.

The previous prime is 221120579. The next prime is 221120591. The reversal of 221120590 is 95021122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120591) 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, 2841 + ... + 21220.

It is an arithmetic number, because the mean of its divisors is an integer number (24904170).

Almost surely, 2^221120590 is an apocalyptic number.

221120590 is a deficient number, since it is larger than the sum of its proper divisors (177346130).

221120590 is a wasteful number, since it uses less digits than its factorization.

221120590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24987.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 221120590 is about 14870.1240748018. The cubic root of 221120590 is about 604.7043064745.

It can be divided in two parts, 2211 and 20590, that added together give a square (22801 = 151²).

The spelling of 221120590 in words is "two hundred twenty-one million, one hundred twenty thousand, five hundred ninety".