21375040922 has 8 divisors (see below), whose sum is σ = 32121828372. Its totient is φ = 10667764800.

The previous prime is 21375040889. The next prime is 21375040949. The reversal of 21375040922 is 22904057312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21022390081 + 352650841 = 144991^2 + 18779^2 .

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

It is a super-2 number, since 2×21375040922² (a number of 21 digits) contains 22 as substring.

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, 9876479 + ... + 9878642.

Almost surely, 2^21375040922 is an apocalyptic number.

21375040922 is a deficient number, since it is larger than the sum of its proper divisors (10746787450).

21375040922 is a wasteful number, since it uses less digits than its factorization.

21375040922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755664.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 21375040922 in words is "twenty-one billion, three hundred seventy-five million, forty thousand, nine hundred twenty-two".