121424403011 has 4 divisors (see below), whose sum is σ = 123482443800. Its totient is φ = 119366362224.

The previous prime is 121424402959. The next prime is 121424403017. The reversal of 121424403011 is 110304424121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110304424121 = 23 ⋅4795844527.

It is a cyclic number.

It is not a de Polignac number, because 121424403011 - 2²⁶ = 121357294147 is a prime.

It is a super-2 number, since 2×121424403011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121424403017) 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, 1029020306 + ... + 1029020423.

It is an arithmetic number, because the mean of its divisors is an integer number (30870610950).

Almost surely, 2^121424403011 is an apocalyptic number.

121424403011 is a deficient number, since it is larger than the sum of its proper divisors (2058040789).

121424403011 is an equidigital number, since it uses as much as digits as its factorization.

121424403011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058040788.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121424403011 its reverse (110304424121), we get a palindrome (231728827132).

The spelling of 121424403011 in words is "one hundred twenty-one billion, four hundred twenty-four million, four hundred three thousand, eleven".