212100120011001 has 32 divisors (see below), whose sum is σ = 293188845081600. Its totient is φ = 136284077071296.

The previous prime is 212100120010991. The next prime is 212100120011047. The reversal of 212100120011001 is 100110021001212.

212100120011001 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 212100120011001 - 2¹⁰ = 212100120009977 is a prime.

It is a super-2 number, since 2×212100120011001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212100120011701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16135731 + ... + 26164136.

It is an arithmetic number, because the mean of its divisors is an integer number (9162151408800).

Almost surely, 2^{212100120011001} is an apocalyptic number.

It is an amenable number.

212100120011001 is a deficient number, since it is larger than the sum of its proper divisors (81088725070599).

212100120011001 is a wasteful number, since it uses less digits than its factorization.

212100120011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42300333.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212100120011001 its reverse (100110021001212), we get a palindrome (312210141012213).

The spelling of 212100120011001 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty million, eleven thousand, one".