86224225721 has 8 divisors (see below), whose sum is σ = 87737738880. Its totient is φ = 84719695392.

The previous prime is 86224225691. The next prime is 86224225729. The reversal of 86224225721 is 12752242268.

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

It is a cyclic number.

It is not a de Polignac number, because 86224225721 - 2³⁰ = 85150483897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86224225729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226341 + ... + 2264738.

It is an arithmetic number, because the mean of its divisors is an integer number (10967217360).

Almost surely, 2^86224225721 is an apocalyptic number.

It is an amenable number.

86224225721 is a deficient number, since it is larger than the sum of its proper divisors (1513513159).

86224225721 is a wasteful number, since it uses less digits than its factorization.

86224225721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491415.

The product of its digits is 215040, while the sum is 41.

Adding to 86224225721 its reverse (12752242268), we get a palindrome (98976467989).

The spelling of 86224225721 in words is "eighty-six billion, two hundred twenty-four million, two hundred twenty-five thousand, seven hundred twenty-one".