12412421421 has 16 divisors (see below), whose sum is σ = 17090519040. Its totient is φ = 8004846960.

The previous prime is 12412421389. The next prime is 12412421447.

It is a happy number.

12412421421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12412421421 - 2⁵ = 12412421389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12412421391 and 12412421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12412421491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222600 + ... + 272718.

It is an arithmetic number, because the mean of its divisors is an integer number (1068157440).

Almost surely, 2^12412421421 is an apocalyptic number.

It is an amenable number.

12412421421 is a deficient number, since it is larger than the sum of its proper divisors (4678097619).

12412421421 is a wasteful number, since it uses less digits than its factorization.

12412421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52816.

The product of its digits is 1024, while the sum is 24.

The spelling of 12412421421 in words is "twelve billion, four hundred twelve million, four hundred twenty-one thousand, four hundred twenty-one".