121223120242 has 32 divisors (see below), whose sum is σ = 208155317760. Its totient is φ = 51866784000.

The previous prime is 121223120177. The next prime is 121223120257. The reversal of 121223120242 is 242021322121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40392742 + ... + 40395742.

It is an arithmetic number, because the mean of its divisors is an integer number (6504853680).

Almost surely, 2^121223120242 is an apocalyptic number.

121223120242 is a deficient number, since it is larger than the sum of its proper divisors (86932197518).

121223120242 is a wasteful number, since it uses less digits than its factorization.

121223120242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121223120242 its reverse (242021322121), we get a palindrome (363244442363).

The spelling of 121223120242 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred twenty thousand, two hundred forty-two".