16204321227 has 16 divisors (see below), whose sum is σ = 22136647680. Its totient is φ = 10537531200.

The previous prime is 16204321207. The next prime is 16204321291. The reversal of 16204321227 is 72212340261.

It is not a de Polignac number, because 16204321227 - 2¹⁴ = 16204304843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16204321194 and 16204321203.

It is not an unprimeable number, because it can be changed into a prime (16204321207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177774 + ... + 1191452.

It is an arithmetic number, because the mean of its divisors is an integer number (1383540480).

Almost surely, 2^16204321227 is an apocalyptic number.

16204321227 is a deficient number, since it is larger than the sum of its proper divisors (5932326453).

16204321227 is a wasteful number, since it uses less digits than its factorization.

16204321227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23354.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 16204321227 its reverse (72212340261), we get a palindrome (88416661488).

It can be divided in two parts, 16204 and 321227, that added together give a triangular number (337431 = T₈₂₁).

The spelling of 16204321227 in words is "sixteen billion, two hundred four million, three hundred twenty-one thousand, two hundred twenty-seven".