20001230021001 has 16 divisors (see below), whose sum is σ = 27372424705920. Its totient is φ = 12983372234880.

The previous prime is 20001230020943. The next prime is 20001230021023. The reversal of 20001230021001 is 10012003210002.

It is not a de Polignac number, because 20001230021001 - 2⁷ = 20001230020873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001230421001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159673765 + ... + 159798978.

It is an arithmetic number, because the mean of its divisors is an integer number (1710776544120).

Almost surely, 2^{20001230021001} is an apocalyptic number.

It is an amenable number.

20001230021001 is a deficient number, since it is larger than the sum of its proper divisors (7371194684919).

20001230021001 is a wasteful number, since it uses less digits than its factorization.

20001230021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319473296.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20001230021001 its reverse (10012003210002), we get a palindrome (30013233231003).

The spelling of 20001230021001 in words is "twenty trillion, one billion, two hundred thirty million, twenty-one thousand, one".