21495682201 has 8 divisors (see below), whose sum is σ = 24570084800. Its totient is φ = 18422177328.

The previous prime is 21495682199. The next prime is 21495682261. The reversal of 21495682201 is 10228659412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21495682201 - 2¹ = 21495682199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21495682261) 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, 172311 + ... + 269596.

It is an arithmetic number, because the mean of its divisors is an integer number (3071260600).

Almost surely, 2^21495682201 is an apocalyptic number.

It is an amenable number.

21495682201 is a deficient number, since it is larger than the sum of its proper divisors (3074402599).

21495682201 is an equidigital number, since it uses as much as digits as its factorization.

21495682201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448863.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 21495682201 in words is "twenty-one billion, four hundred ninety-five million, six hundred eighty-two thousand, two hundred one".