12422022421 has 4 divisors (see below), whose sum is σ = 12545012844. Its totient is φ = 12299032000.

The previous prime is 12422022419. The next prime is 12422022463.

12422022421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9779034321 + 2642988100 = 98889^2 + 51410^2 .

It is a cyclic number.

It is not a de Polignac number, because 12422022421 - 2¹ = 12422022419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12422022392 and 12422022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422022401) 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, 61495060 + ... + 61495261.

It is an arithmetic number, because the mean of its divisors is an integer number (3136253211).

Almost surely, 2^12422022421 is an apocalyptic number.

It is an amenable number.

12422022421 is a deficient number, since it is larger than the sum of its proper divisors (122990423).

12422022421 is a wasteful number, since it uses less digits than its factorization.

12422022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122990422.

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 124220 and 22421, that added together give a palindrome (146641).

The spelling of 12422022421 in words is "twelve billion, four hundred twenty-two million, twenty-two thousand, four hundred twenty-one".