21004413243322 has 16 divisors (see below), whose sum is σ = 31736680004232. Its totient is φ = 10425703590720.

The previous prime is 21004413243299. The next prime is 21004413243329. The reversal of 21004413243322 is 22334231440012.

It can be written as a sum of positive squares in 4 ways, for example, as 18582315539841 + 2422097703481 = 4310721^2 + 1556309^2 .

It is not an unprimeable number, because it can be changed into a prime (21004413243329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45691413 + ... + 46148824.

Almost surely, 2^{21004413243322} is an apocalyptic number.

21004413243322 is a deficient number, since it is larger than the sum of its proper divisors (10732266760910).

21004413243322 is a wasteful number, since it uses less digits than its factorization.

21004413243322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91841073.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21004413243322 its reverse (22334231440012), we get a palindrome (43338644683334).

The spelling of 21004413243322 in words is "twenty-one trillion, four billion, four hundred thirteen million, two hundred forty-three thousand, three hundred twenty-two".