12220420351 has 2 divisors, whose sum is σ = 12220420352. Its totient is φ = 12220420350.

The previous prime is 12220420343. The next prime is 12220420367. The reversal of 12220420351 is 15302402221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220420351 - 2³ = 12220420343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220420391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110210175 + 6110210176.

It is an arithmetic number, because the mean of its divisors is an integer number (6110210176).

Almost surely, 2^12220420351 is an apocalyptic number.

12220420351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220420351 is an equidigital number, since it uses as much as digits as its factorization.

12220420351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12220420351 its reverse (15302402221), we get a palindrome (27522822572).

The spelling of 12220420351 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, three hundred fifty-one".