220640332001 has 8 divisors (see below), whose sum is σ = 220890297024. Its totient is φ = 220390490320.

The previous prime is 220640331971. The next prime is 220640332039. The reversal of 220640332001 is 100233046022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220640332001 is a prime.

It is a super-2 number, since 2×220640332001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220640332051) 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, 3816356 + ... + 3873738.

It is an arithmetic number, because the mean of its divisors is an integer number (27611287128).

Almost surely, 2^220640332001 is an apocalyptic number.

It is an amenable number.

220640332001 is a deficient number, since it is larger than the sum of its proper divisors (249965023).

220640332001 is a wasteful number, since it uses less digits than its factorization.

220640332001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61671.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 220640332001 its reverse (100233046022), we get a palindrome (320873378023).

The spelling of 220640332001 in words is "two hundred twenty billion, six hundred forty million, three hundred thirty-two thousand, one".