20640211201 has 8 divisors (see below), whose sum is σ = 21552675840. Its totient is φ = 19729001952.

The previous prime is 20640211181. The next prime is 20640211219. The reversal of 20640211201 is 10211204602.

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 20640211201 - 2²³ = 20631822593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20640217201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280161 + ... + 346078.

It is an arithmetic number, because the mean of its divisors is an integer number (2694084480).

Almost surely, 2^20640211201 is an apocalyptic number.

It is an amenable number.

20640211201 is a deficient number, since it is larger than the sum of its proper divisors (912464639).

20640211201 is a wasteful number, since it uses less digits than its factorization.

20640211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627695.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20640211201 its reverse (10211204602), we get a palindrome (30851415803).

The spelling of 20640211201 in words is "twenty billion, six hundred forty million, two hundred eleven thousand, two hundred one".