21040331122 has 8 divisors (see below), whose sum is σ = 31992832476. Its totient is φ = 10376053632.

The previous prime is 21040331113. The next prime is 21040331153. The reversal of 21040331122 is 22113304012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19110574081 + 1929757041 = 138241^2 + 43929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21040331122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72055783 + ... + 72056074.

Almost surely, 2^21040331122 is an apocalyptic number.

21040331122 is a deficient number, since it is larger than the sum of its proper divisors (10952501354).

21040331122 is a wasteful number, since it uses less digits than its factorization.

21040331122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144111932.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21040331122 its reverse (22113304012), we get a palindrome (43153635134).

The spelling of 21040331122 in words is "twenty-one billion, forty million, three hundred thirty-one thousand, one hundred twenty-two".