21000223231332 has 48 divisors (see below), whose sum is σ = 49917257174400. Its totient is φ = 6869634888960.

The previous prime is 21000223231331. The next prime is 21000223231349. The reversal of 21000223231332 is 23313232200012.

It is not an unprimeable number, because it can be changed into a prime (21000223231331) 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 15 ways as a sum of consecutive naturals, for example, 32353857 + ... + 32996552.

It is an arithmetic number, because the mean of its divisors is an integer number (1039942857800).

Almost surely, 2^{21000223231332} is an apocalyptic number.

It is an amenable number.

21000223231332 is an abundant number, since it is smaller than the sum of its proper divisors (28917033943068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000223231332 is a wasteful number, since it uses less digits than its factorization.

21000223231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65350916 (or 65350914 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21000223231332 its reverse (23313232200012), we get a palindrome (44313455431344).

The spelling of 21000223231332 in words is "twenty-one trillion, two hundred twenty-three million, two hundred thirty-one thousand, three hundred thirty-two".