121123100242 has 16 divisors (see below), whose sum is σ = 191084044032. Its totient is φ = 57502139760.

The previous prime is 121123100207. The next prime is 121123100291. The reversal of 121123100242 is 242001321121.

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, 18426888 + ... + 18433459.

It is an arithmetic number, because the mean of its divisors is an integer number (11942752752).

Almost surely, 2^121123100242 is an apocalyptic number.

121123100242 is a deficient number, since it is larger than the sum of its proper divisors (69960943790).

121123100242 is a wasteful number, since it uses less digits than its factorization.

121123100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36860433.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121123100242 its reverse (242001321121), we get a palindrome (363124421363).

The spelling of 121123100242 in words is "one hundred twenty-one billion, one hundred twenty-three million, one hundred thousand, two hundred forty-two".