211001021212101 has 16 divisors (see below), whose sum is σ = 282025333027200. Its totient is φ = 140322035213568.

The previous prime is 211001021212061. The next prime is 211001021212183. The reversal of 211001021212101 is 101212120100112.

It is a happy number.

It is not a de Polignac number, because 211001021212101 - 2¹⁴ = 211001021195717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211001021212801) 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, 132283960 + ... + 133869518.

It is an arithmetic number, because the mean of its divisors is an integer number (17626583314200).

Almost surely, 2^{211001021212101} is an apocalyptic number.

It is an amenable number.

211001021212101 is a deficient number, since it is larger than the sum of its proper divisors (71024311815099).

211001021212101 is a wasteful number, since it uses less digits than its factorization.

211001021212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694428.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211001021212101 its reverse (101212120100112), we get a palindrome (312213141312213).

The spelling of 211001021212101 in words is "two hundred eleven trillion, one billion, twenty-one million, two hundred twelve thousand, one hundred one".