21231023223300 has 144 divisors (see below), whose sum is σ = 67014509463552. Its totient is φ = 5146785705600.

The previous prime is 21231023223287. The next prime is 21231023223331. The reversal of 21231023223300 is 332232013212.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238766649 + ... + 238855551.

Almost surely, 2^{21231023223300} is an apocalyptic number.

21231023223300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231023223300 is an abundant number, since it is smaller than the sum of its proper divisors (45783486240252).

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

21231023223300 is a wasteful number, since it uses less digits than its factorization.

21231023223300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161298 (or 161291 counting only the distinct ones).

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

Adding to 21231023223300 its reverse (332232013212), we get a palindrome (21563255236512).

The spelling of 21231023223300 in words is "twenty-one trillion, two hundred thirty-one billion, twenty-three million, two hundred twenty-three thousand, three hundred".