20001022101211 has 8 divisors (see below), whose sum is σ = 20035226995344. Its totient is φ = 19966818812160.

The previous prime is 20001022101209. The next prime is 20001022101217. The reversal of 20001022101211 is 11210122010002.

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 20001022101211 - 2¹ = 20001022101209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001022101191 and 20001022101200.

It is not an unprimeable number, because it can be changed into a prime (20001022101217) 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, 26028175 + ... + 26785591.

It is an arithmetic number, because the mean of its divisors is an integer number (2504403374418).

Almost surely, 2^{20001022101211} is an apocalyptic number.

20001022101211 is a deficient number, since it is larger than the sum of its proper divisors (34204894133).

20001022101211 is an equidigital number, since it uses as much as digits as its factorization.

20001022101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802541.

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

Adding to 20001022101211 its reverse (11210122010002), we get a palindrome (31211144111213).

The spelling of 20001022101211 in words is "twenty trillion, one billion, twenty-two million, one hundred one thousand, two hundred eleven".