121310222 has 16 divisors (see below), whose sum is σ = 198685872. Its totient is φ = 55091520.

The previous prime is 121310197. The next prime is 121310251. The reversal of 121310222 is 222013121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121310197 and 121310206.

It is a congruent number.

It is an unprimeable number.

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, 35618 + ... + 38874.

It is an arithmetic number, because the mean of its divisors is an integer number (12417867).

Almost surely, 2^121310222 is an apocalyptic number.

121310222 is a deficient number, since it is larger than the sum of its proper divisors (77375650).

121310222 is a wasteful number, since it uses less digits than its factorization.

121310222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963.

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

The square root of 121310222 is about 11014.0919734674. The cubic root of 121310222 is about 495.0310792308.

Adding to 121310222 its reverse (222013121), we get a palindrome (343323343).

The spelling of 121310222 in words is "one hundred twenty-one million, three hundred ten thousand, two hundred twenty-two".