1234242112121 has 4 divisors (see below), whose sum is σ = 1287904812672. Its totient is φ = 1180579411572.

The previous prime is 1234242112073. The next prime is 1234242112163. The reversal of 1234242112121 is 1212112424321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1234242112121 - 2⁶ = 1234242112057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234242112171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26831350241 + ... + 26831350286.

It is an arithmetic number, because the mean of its divisors is an integer number (321976203168).

Almost surely, 2^{1234242112121} is an apocalyptic number.

It is an amenable number.

1234242112121 is a deficient number, since it is larger than the sum of its proper divisors (53662700551).

1234242112121 is an equidigital number, since it uses as much as digits as its factorization.

1234242112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53662700550.

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

Adding to 1234242112121 its reverse (1212112424321), we get a palindrome (2446354536442).

The spelling of 1234242112121 in words is "one trillion, two hundred thirty-four billion, two hundred forty-two million, one hundred twelve thousand, one hundred twenty-one".