20021212101001 has 8 divisors (see below), whose sum is σ = 20359755907200. Its totient is φ = 19684239264480.

The previous prime is 20021212100971. The next prime is 20021212101101. The reversal of 20021212101001 is 10010121212002.

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 20021212101001 - 2⁵ = 20021212100969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021212101101) 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, 392716716 + ... + 392767693.

It is an arithmetic number, because the mean of its divisors is an integer number (2544969488400).

Almost surely, 2^{20021212101001} is an apocalyptic number.

It is an amenable number.

20021212101001 is a deficient number, since it is larger than the sum of its proper divisors (338543806199).

20021212101001 is an equidigital number, since it uses as much as digits as its factorization.

20021212101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785484839.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021212101001 its reverse (10010121212002), we get a palindrome (30031333313003).

The spelling of 20021212101001 in words is "twenty trillion, twenty-one billion, two hundred twelve million, one hundred one thousand, one".