21333332333332 has 6 divisors (see below), whose sum is σ = 37333331583338. Its totient is φ = 10666666166664.

The previous prime is 21333332333317. The next prime is 21333332333389. The reversal of 21333332333332 is 23333323333312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11736694884996 + 9596637448336 = 3425886^2 + 3097844^2 .

It is a super-2 number, since 2×21333332333332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21333332333291 and 21333332333300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666666541663 + ... + 2666666541670.

Almost surely, 2^{21333332333332} is an apocalyptic number.

It is an amenable number.

21333332333332 is a deficient number, since it is larger than the sum of its proper divisors (15999999250006).

21333332333332 is a wasteful number, since it uses less digits than its factorization.

21333332333332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333333083337 (or 5333333083335 counting only the distinct ones).

The product of its digits is 472392, while the sum is 37.

Adding to 21333332333332 its reverse (23333323333312), we get a palindrome (44666655666644).

The spelling of 21333332333332 in words is "twenty-one trillion, three hundred thirty-three billion, three hundred thirty-two million, three hundred thirty-three thousand, three hundred thirty-two".