21195035522 has 8 divisors (see below), whose sum is σ = 31794707196. Its totient is φ = 10596799792.

The previous prime is 21195035483. The next prime is 21195035551. The reversal of 21195035522 is 22553059112.

It can be written as a sum of positive squares in 2 ways, for example, as 14234637481 + 6960398041 = 119309^2 + 83429^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321293 + ... + 381600.

Almost surely, 2^21195035522 is an apocalyptic number.

21195035522 is a deficient number, since it is larger than the sum of its proper divisors (10599671674).

21195035522 is a wasteful number, since it uses less digits than its factorization.

21195035522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717972.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 21195035522 in words is "twenty-one billion, one hundred ninety-five million, thirty-five thousand, five hundred twenty-two".