121223222 has 4 divisors (see below), whose sum is σ = 181834836. Its totient is φ = 60611610.

The previous prime is 121223213. The next prime is 121223227. The reversal of 121223222 is 222322121.

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

It is a super-2 number, since 2×121223222² = 29390139104122568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121223222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121223227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305804 + ... + 30305807.

It is an arithmetic number, because the mean of its divisors is an integer number (45458709).

Almost surely, 2^121223222 is an apocalyptic number.

121223222 is a deficient number, since it is larger than the sum of its proper divisors (60611614).

121223222 is an equidigital number, since it uses as much as digits as its factorization.

121223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60611613.

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

The square root of 121223222 is about 11010.1417792869. The cubic root of 121223222 is about 494.9127105204.

Adding to 121223222 its reverse (222322121), we get a palindrome (343545343).

The spelling of 121223222 in words is "one hundred twenty-one million, two hundred twenty-three thousand, two hundred twenty-two".