221123102 has 16 divisors (see below), whose sum is σ = 355732560. Its totient is φ = 102765312.

The previous prime is 221123101. The next prime is 221123113. The reversal of 221123102 is 201321122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221123101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52883 + ... + 56910.

It is an arithmetic number, because the mean of its divisors is an integer number (22233285).

Almost surely, 2^221123102 is an apocalyptic number.

221123102 is a deficient number, since it is larger than the sum of its proper divisors (134609458).

221123102 is a wasteful number, since it uses less digits than its factorization.

221123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109867.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221123102 is about 14870.2085392237. The cubic root of 221123102 is about 604.7065963433.

Adding to 221123102 its reverse (201321122), we get a palindrome (422444224).

The spelling of 221123102 in words is "two hundred twenty-one million, one hundred twenty-three thousand, one hundred two".