21233231332 has 24 divisors (see below), whose sum is σ = 37340352000. Its totient is φ = 10564599936.

The previous prime is 21233231323. The next prime is 21233231347. The reversal of 21233231332 is 23313233212.

It is a super-2 number, since 2×21233231332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21233231297 and 21233231306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3608769 + ... + 3614647.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848000).

Almost surely, 2^21233231332 is an apocalyptic number.

It is an amenable number.

21233231332 is a deficient number, since it is larger than the sum of its proper divisors (16107120668).

21233231332 is a wasteful number, since it uses less digits than its factorization.

21233231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155 (or 10153 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 21233231332 its reverse (23313233212), we get a palindrome (44546464544).

The spelling of 21233231332 in words is "twenty-one billion, two hundred thirty-three million, two hundred thirty-one thousand, three hundred thirty-two".