20010021212001 has 8 divisors (see below), whose sum is σ = 26944186978944. Its totient is φ = 13207934793200.

The previous prime is 20010021211969. The next prime is 20010021212011. The reversal of 20010021212001 is 10021212001002.

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 20010021212001 - 2⁵ = 20010021211969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20010021212011) 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, 33019836681 + ... + 33019837286.

It is an arithmetic number, because the mean of its divisors is an integer number (3368023372368).

Almost surely, 2^{20010021212001} is an apocalyptic number.

It is an amenable number.

20010021212001 is a deficient number, since it is larger than the sum of its proper divisors (6934165766943).

20010021212001 is a wasteful number, since it uses less digits than its factorization.

20010021212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66039674071.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010021212001 its reverse (10021212001002), we get a palindrome (30031233213003).

The spelling of 20010021212001 in words is "twenty trillion, ten billion, twenty-one million, two hundred twelve thousand, one".