212100110121001 has 16 divisors (see below), whose sum is σ = 226090734131200. Its totient is φ = 198392262361488.

The previous prime is 212100110120993. The next prime is 212100110121013. The reversal of 212100110121001 is 100121011001212.

It is a happy number.

212100110121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212100110121001 - 2³ = 212100110120993 is a prime.

It is a super-2 number, since 2×212100110121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100110121041) 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, 349554460 + ... + 350160706.

It is an arithmetic number, because the mean of its divisors is an integer number (14130670883200).

Almost surely, 2^{212100110121001} is an apocalyptic number.

It is an amenable number.

212100110121001 is a deficient number, since it is larger than the sum of its proper divisors (13990624010199).

212100110121001 is a wasteful number, since it uses less digits than its factorization.

212100110121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839428.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 212100110121001 its reverse (100121011001212), we get a palindrome (312221121122213).

The spelling of 212100110121001 in words is "two hundred twelve trillion, one hundred billion, one hundred ten million, one hundred twenty-one thousand, one".