4172248221 has 4 divisors (see below), whose sum is σ = 5562997632. Its totient is φ = 2781498812.

The previous prime is 4172248219. The next prime is 4172248229. The reversal of 4172248221 is 1228422714.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4172248221 - 2¹ = 4172248219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4172248229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695374701 + ... + 695374706.

It is an arithmetic number, because the mean of its divisors is an integer number (1390749408).

Almost surely, 2^4172248221 is an apocalyptic number.

It is an amenable number.

4172248221 is a deficient number, since it is larger than the sum of its proper divisors (1390749411).

4172248221 is a wasteful number, since it uses less digits than its factorization.

4172248221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390749410.

The product of its digits is 14336, while the sum is 33.

The square root of 4172248221 is about 64592.9425014839. The cubic root of 4172248221 is about 1609.8671779372.

The spelling of 4172248221 in words is "four billion, one hundred seventy-two million, two hundred forty-eight thousand, two hundred twenty-one".