121312334204242 has 32 divisors (see below), whose sum is σ = 183039694110000. Its totient is φ = 60299946187776.

The previous prime is 121312334204227. The next prime is 121312334204389. The reversal of 121312334204242 is 242402433213121.

It can be written as a sum of positive squares in 8 ways, for example, as 115890370727121 + 5421963477121 = 10765239^2 + 2328511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121312334204198 and 121312334204207.

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, 1396453984 + ... + 1396540852.

Almost surely, 2^{121312334204242} is an apocalyptic number.

121312334204242 is a deficient number, since it is larger than the sum of its proper divisors (61727359905758).

121312334204242 is a wasteful number, since it uses less digits than its factorization.

121312334204242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91678.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 121312334204242 its reverse (242402433213121), we get a palindrome (363714767417363).

The spelling of 121312334204242 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred thirty-four million, two hundred four thousand, two hundred forty-two".