16711133514221 has 16 divisors (see below), whose sum is σ = 17351024947200. Its totient is φ = 16075575105408.

The previous prime is 16711133514197. The next prime is 16711133514227. The reversal of 16711133514221 is 12241533111761.

It is a cyclic number.

It is not a de Polignac number, because 16711133514221 - 2⁶ = 16711133514157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16711133514227) 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, 9604400 + ... + 11210118.

It is an arithmetic number, because the mean of its divisors is an integer number (1084439059200).

Almost surely, 2^{16711133514221} is an apocalyptic number.

It is an amenable number.

16711133514221 is a deficient number, since it is larger than the sum of its proper divisors (639891432979).

16711133514221 is a wasteful number, since it uses less digits than its factorization.

16711133514221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607068.

The product of its digits is 30240, while the sum is 38.

Adding to 16711133514221 its reverse (12241533111761), we get a palindrome (28952666625982).

The spelling of 16711133514221 in words is "sixteen trillion, seven hundred eleven billion, one hundred thirty-three million, five hundred fourteen thousand, two hundred twenty-one".