36351032221 has 16 divisors (see below), whose sum is σ = 44708924160. Its totient is φ = 28844455680.

The previous prime is 36351032219. The next prime is 36351032243. The reversal of 36351032221 is 12223015363.

It is a cyclic number.

It is not a de Polignac number, because 36351032221 - 2¹ = 36351032219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36351032221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36351032521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2496601 + ... + 2511118.

It is an arithmetic number, because the mean of its divisors is an integer number (2794307760).

Almost surely, 2^36351032221 is an apocalyptic number.

It is an amenable number.

36351032221 is a deficient number, since it is larger than the sum of its proper divisors (8357891939).

36351032221 is a wasteful number, since it uses less digits than its factorization.

36351032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007804.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 36351032221 its reverse (12223015363), we get a palindrome (48574047584).

The spelling of 36351032221 in words is "thirty-six billion, three hundred fifty-one million, thirty-two thousand, two hundred twenty-one".