4221623571 has 12 divisors (see below), whose sum is σ = 6187063176. Its totient is φ = 2558559520.

The previous prime is 4221623543. The next prime is 4221623579. The reversal of 4221623571 is 1753261224.

4221623571 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4221623571 - 2²⁵ = 4188069139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (4221623579) 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, 5814546 + ... + 5815271.

It is an arithmetic number, because the mean of its divisors is an integer number (515588598).

Almost surely, 2^4221623571 is an apocalyptic number.

4221623571 is a deficient number, since it is larger than the sum of its proper divisors (1965439605).

4221623571 is a wasteful number, since it uses less digits than its factorization.

4221623571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11629842 (or 11629831 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 4221623571 is about 64974.0222781382. The cubic root of 4221623571 is about 1616.1928036540.

Adding to 4221623571 its reverse (1753261224), we get a palindrome (5974884795).

The spelling of 4221623571 in words is "four billion, two hundred twenty-one million, six hundred twenty-three thousand, five hundred seventy-one".