420112220401 has 4 divisors (see below), whose sum is σ = 444824703972. Its totient is φ = 395399736832.

The previous prime is 420112220303. The next prime is 420112220419. The reversal of 420112220401 is 104022211024.

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 367211760400 + 52900460001 = 605980^2 + 230001^2 .

It is a cyclic number.

It is not a de Polignac number, because 420112220401 - 2²⁵ = 420078665969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420112220461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12356241760 + ... + 12356241793.

It is an arithmetic number, because the mean of its divisors is an integer number (111206175993).

Almost surely, 2^420112220401 is an apocalyptic number.

It is an amenable number.

420112220401 is a deficient number, since it is larger than the sum of its proper divisors (24712483571).

420112220401 is a wasteful number, since it uses less digits than its factorization.

420112220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24712483570.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 420112220401 its reverse (104022211024), we get a palindrome (524134431425).

The spelling of 420112220401 in words is "four hundred twenty billion, one hundred twelve million, two hundred twenty thousand, four hundred one".