121222345 has 8 divisors (see below), whose sum is σ = 145728576. Its totient is φ = 96803376.

The previous prime is 121222331. The next prime is 121222357. The reversal of 121222345 is 543222121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121222345 - 2¹³ = 121214153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18717 + ... + 24346.

It is an arithmetic number, because the mean of its divisors is an integer number (18216072).

Almost surely, 2^121222345 is an apocalyptic number.

It is an amenable number.

121222345 is a deficient number, since it is larger than the sum of its proper divisors (24506231).

121222345 is an equidigital number, since it uses as much as digits as its factorization.

121222345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43631.

The product of its digits is 960, while the sum is 22.

The square root of 121222345 is about 11010.1019522982. The cubic root of 121222345 is about 494.9115170211.

Adding to 121222345 its reverse (543222121), we get a palindrome (664444466).

The spelling of 121222345 in words is "one hundred twenty-one million, two hundred twenty-two thousand, three hundred forty-five".