121122223 has 4 divisors (see below), whose sum is σ = 121306680. Its totient is φ = 120937768.

The previous prime is 121122193. The next prime is 121122269. The reversal of 121122223 is 322221121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121122223 - 2⁵ = 121122191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122197 and 121122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91240 + ... + 92557.

It is an arithmetic number, because the mean of its divisors is an integer number (30326670).

Almost surely, 2^121122223 is an apocalyptic number.

121122223 is a deficient number, since it is larger than the sum of its proper divisors (184457).

121122223 is an equidigital number, since it uses as much as digits as its factorization.

121122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184456.

The product of its digits is 96, while the sum is 16.

The square root of 121122223 is about 11005.5541886813. The cubic root of 121122223 is about 494.7752242738.

Adding to 121122223 its reverse (322221121), we get a palindrome (443343344).

The spelling of 121122223 in words is "one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".