121222223 has 16 divisors (see below), whose sum is σ = 135717120. Its totient is φ = 107600256.

The previous prime is 121222193. The next prime is 121222237. The reversal of 121222223 is 322222121.

It is a cyclic number.

It is not a de Polignac number, because 121222223 - 2¹² = 121218127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84236 + ... + 85662.

It is an arithmetic number, because the mean of its divisors is an integer number (8482320).

Almost surely, 2^121222223 is an apocalyptic number.

121222223 is a deficient number, since it is larger than the sum of its proper divisors (14494897).

121222223 is a wasteful number, since it uses less digits than its factorization.

121222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726.

The product of its digits is 192, while the sum is 17.

The square root of 121222223 is about 11010.0964119303. The cubic root of 121222223 is about 494.9113509922.

Adding to 121222223 its reverse (322222121), we get a palindrome (443444344).

The spelling of 121222223 in words is "one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-three".