20401322001 has 8 divisors (see below), whose sum is σ = 27302139264. Its totient is φ = 13550693040.

The previous prime is 20401321957. The next prime is 20401322009. The reversal of 20401322001 is 10022310402.

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

It is not a de Polignac number, because 20401322001 - 2⁷ = 20401321873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20401322009) 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, 12546126 + ... + 12547751.

It is an arithmetic number, because the mean of its divisors is an integer number (3412767408).

Almost surely, 2^20401322001 is an apocalyptic number.

It is an amenable number.

20401322001 is a deficient number, since it is larger than the sum of its proper divisors (6900817263).

20401322001 is a wasteful number, since it uses less digits than its factorization.

20401322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25094151.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20401322001 its reverse (10022310402), we get a palindrome (30423632403).

The spelling of 20401322001 in words is "twenty billion, four hundred one million, three hundred twenty-two thousand, one".