121324112100242 has 4 divisors (see below), whose sum is σ = 181986168150366. Its totient is φ = 60662056050120.

The previous prime is 121324112100193. The next prime is 121324112100271. The reversal of 121324112100242 is 242001211423121.

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

It can be written as a sum of positive squares in only one way, i.e., 60799306406881 + 60524805693361 = 7797391^2 + 7779769^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30331028025059 + ... + 30331028025062.

Almost surely, 2^{121324112100242} is an apocalyptic number.

121324112100242 is a deficient number, since it is larger than the sum of its proper divisors (60662056050124).

121324112100242 is an equidigital number, since it uses as much as digits as its factorization.

121324112100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60662056050123.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 121324112100242 its reverse (242001211423121), we get a palindrome (363325323523363).

The spelling of 121324112100242 in words is "one hundred twenty-one trillion, three hundred twenty-four billion, one hundred twelve million, one hundred thousand, two hundred forty-two".