12420420322 has 8 divisors (see below), whose sum is σ = 18680579676. Its totient is φ = 6193560432.

The previous prime is 12420420319. The next prime is 12420420323. The reversal of 12420420322 is 22302402421.

It can be written as a sum of positive squares in 2 ways, for example, as 11828520081 + 591900241 = 108759^2 + 24329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12420420293 and 12420420302.

It is not an unprimeable number, because it can be changed into a prime (12420420323) 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, 8323933 + ... + 8325424.

Almost surely, 2^12420420322 is an apocalyptic number.

12420420322 is a deficient number, since it is larger than the sum of its proper divisors (6260159354).

12420420322 is a wasteful number, since it uses less digits than its factorization.

12420420322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16649732.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12420420322 its reverse (22302402421), we get a palindrome (34722822743).

The spelling of 12420420322 in words is "twelve billion, four hundred twenty million, four hundred twenty thousand, three hundred twenty-two".