6420501222 has 8 divisors (see below), whose sum is σ = 12841002456. Its totient is φ = 2140167072.

The previous prime is 6420501209. The next prime is 6420501251. The reversal of 6420501222 is 2221050246.

It is a happy number.

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

6420501222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6420501192 and 6420501201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535041763 + ... + 535041774.

It is an arithmetic number, because the mean of its divisors is an integer number (1605125307).

Almost surely, 2^6420501222 is an apocalyptic number.

6420501222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6420501222 is a wasteful number, since it uses less digits than its factorization.

6420501222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070083542.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 6420501222 is about 80128.0301891916. The cubic root of 6420501222 is about 1858.6158837835.

Adding to 6420501222 its reverse (2221050246), we get a palindrome (8641551468).

The spelling of 6420501222 in words is "six billion, four hundred twenty million, five hundred one thousand, two hundred twenty-two".