867016221 has 4 divisors (see below), whose sum is σ = 1156021632. Its totient is φ = 578010812.

The previous prime is 867016187. The next prime is 867016223. The reversal of 867016221 is 122610768.

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 867016221 - 2¹³ = 867008029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867016223) 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, 144502701 + ... + 144502706.

It is an arithmetic number, because the mean of its divisors is an integer number (289005408).

Almost surely, 2^867016221 is an apocalyptic number.

It is an amenable number.

867016221 is a deficient number, since it is larger than the sum of its proper divisors (289005411).

867016221 is a wasteful number, since it uses less digits than its factorization.

867016221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289005410.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 867016221 is about 29445.1391744036. The cubic root of 867016221 is about 953.5476662721.

Adding to 867016221 its reverse (122610768), we get a palindrome (989626989).

The spelling of 867016221 in words is "eight hundred sixty-seven million, sixteen thousand, two hundred twenty-one".