121253424113 has 4 divisors (see below), whose sum is σ = 121262635008. Its totient is φ = 121244213220.

The previous prime is 121253424109. The next prime is 121253424143. The reversal of 121253424113 is 311424352121.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311424352121 = 271 ⋅1149167351.

It is a cyclic number.

It is not a de Polignac number, because 121253424113 - 2² = 121253424109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121253424143) 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, 4585673 + ... + 4612038.

It is an arithmetic number, because the mean of its divisors is an integer number (30315658752).

Almost surely, 2^121253424113 is an apocalyptic number.

It is an amenable number.

121253424113 is a deficient number, since it is larger than the sum of its proper divisors (9210895).

121253424113 is an equidigital number, since it uses as much as digits as its factorization.

121253424113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9210894.

The product of its digits is 5760, while the sum is 29.

Adding to 121253424113 its reverse (311424352121), we get a palindrome (432677776234).

The spelling of 121253424113 in words is "one hundred twenty-one billion, two hundred fifty-three million, four hundred twenty-four thousand, one hundred thirteen".