21041333332 has 12 divisors (see below), whose sum is σ = 37720439316. Its totient is φ = 10264064960.

The previous prime is 21041333329. The next prime is 21041333377. The reversal of 21041333332 is 23333314012.

It can be written as a sum of positive squares in 2 ways, for example, as 1788105796 + 19253227536 = 42286^2 + 138756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21041333297 and 21041333306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64150243 + ... + 64150570.

It is an arithmetic number, because the mean of its divisors is an integer number (3143369943).

Almost surely, 2^21041333332 is an apocalyptic number.

It is an amenable number.

21041333332 is a deficient number, since it is larger than the sum of its proper divisors (16679105984).

21041333332 is a wasteful number, since it uses less digits than its factorization.

21041333332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128300858 (or 128300856 counting only the distinct ones).

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

Adding to 21041333332 its reverse (23333314012), we get a palindrome (44374647344).

The spelling of 21041333332 in words is "twenty-one billion, forty-one million, three hundred thirty-three thousand, three hundred thirty-two".