221022123 has 8 divisors (see below), whose sum is σ = 336795648. Its totient is φ = 126298344.

The previous prime is 221022097. The next prime is 221022143. The reversal of 221022123 is 321220122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221022123 - 2⁵ = 221022091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221022143) 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, 5262411 + ... + 5262452.

It is an arithmetic number, because the mean of its divisors is an integer number (42099456).

Almost surely, 2^221022123 is an apocalyptic number.

221022123 is a deficient number, since it is larger than the sum of its proper divisors (115773525).

221022123 is a wasteful number, since it uses less digits than its factorization.

221022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524873.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221022123 is about 14866.8128057092. The cubic root of 221022123 is about 604.6145330473.

Adding to 221022123 its reverse (321220122), we get a palindrome (542242245).

The spelling of 221022123 in words is "two hundred twenty-one million, twenty-two thousand, one hundred twenty-three".