4222505421 has 12 divisors (see below), whose sum is σ = 6107573472. Its totient is φ = 2811127176.

The previous prime is 4222505411. The next prime is 4222505431. The reversal of 4222505421 is 1245052224.

It is an interprime number because it is at equal distance from previous prime (4222505411) and next prime (4222505431).

It is not a de Polignac number, because 4222505421 - 2⁷ = 4222505293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222505401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316131 + ... + 329216.

It is an arithmetic number, because the mean of its divisors is an integer number (508964456).

Almost surely, 2^4222505421 is an apocalyptic number.

It is an amenable number.

4222505421 is a deficient number, since it is larger than the sum of its proper divisors (1885068051).

4222505421 is a wasteful number, since it uses less digits than its factorization.

4222505421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646080 (or 646077 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 4222505421 is about 64980.8080974683. The cubic root of 4222505421 is about 1616.3053306926.

Adding to 4222505421 its reverse (1245052224), we get a palindrome (5467557645).

The spelling of 4222505421 in words is "four billion, two hundred twenty-two million, five hundred five thousand, four hundred twenty-one".