21000223231306 has 16 divisors (see below), whose sum is σ = 34432867404000. Its totient is φ = 9526426638480.

The previous prime is 21000223231303. The next prime is 21000223231313. The reversal of 21000223231306 is 60313232200012.

It is not an unprimeable number, because it can be changed into a prime (21000223231303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956457561 + ... + 956479516.

It is an arithmetic number, because the mean of its divisors is an integer number (2152054212750).

Almost surely, 2^{21000223231306} is an apocalyptic number.

21000223231306 is a deficient number, since it is larger than the sum of its proper divisors (13432644172694).

21000223231306 is a wasteful number, since it uses less digits than its factorization.

21000223231306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912937589.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21000223231306 its reverse (60313232200012), we get a palindrome (81313455431318).

The spelling of 21000223231306 in words is "twenty-one trillion, two hundred twenty-three million, two hundred thirty-one thousand, three hundred six".