21231333122 has 8 divisors (see below), whose sum is σ = 31869768000. Its totient is φ = 10608077124.

The previous prime is 21231333121. The next prime is 21231333163. The reversal of 21231333122 is 22133313212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21231333122² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21231333121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791222 + ... + 3796817.

It is an arithmetic number, because the mean of its divisors is an integer number (3983721000).

Almost surely, 2^21231333122 is an apocalyptic number.

21231333122 is a deficient number, since it is larger than the sum of its proper divisors (10638434878).

21231333122 is a wasteful number, since it uses less digits than its factorization.

21231333122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589440.

The product of its digits is 1296, while the sum is 23.

Adding to 21231333122 its reverse (22133313212), we get a palindrome (43364646334).

The spelling of 21231333122 in words is "twenty-one billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred twenty-two".