21222031233332 has 12 divisors (see below), whose sum is σ = 37162530495300. Its totient is φ = 10604165377536.

The previous prime is 21222031233331. The next prime is 21222031233341. The reversal of 21222031233332 is 23333213022212.

It can be written as a sum of positive squares in 2 ways, for example, as 4747491907876 + 16474539325456 = 2178874^2 + 4058884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21222031233295 and 21222031233304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222031233331) 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, 1712552813 + ... + 1712565204.

It is an arithmetic number, because the mean of its divisors is an integer number (3096877541275).

Almost surely, 2^{21222031233332} is an apocalyptic number.

It is an amenable number.

21222031233332 is a deficient number, since it is larger than the sum of its proper divisors (15940499261968).

21222031233332 is a wasteful number, since it uses less digits than its factorization.

21222031233332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425119570 (or 3425119568 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21222031233332 its reverse (23333213022212), we get a palindrome (44555244255544).

The spelling of 21222031233332 in words is "twenty-one trillion, two hundred twenty-two billion, thirty-one million, two hundred thirty-three thousand, three hundred thirty-two".