212112201100001 has 4 divisors (see below), whose sum is σ = 212140173176832. Its totient is φ = 212084229023172.

The previous prime is 212112201099977. The next prime is 212112201100039. The reversal of 212112201100001 is 100001102211212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212112201100001 - 2¹⁸ = 212112200837857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212112201100301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13986027041 + ... + 13986042206.

It is an arithmetic number, because the mean of its divisors is an integer number (53035043294208).

Almost surely, 2^{212112201100001} is an apocalyptic number.

It is an amenable number.

212112201100001 is a deficient number, since it is larger than the sum of its proper divisors (27972076831).

212112201100001 is an equidigital number, since it uses as much as digits as its factorization.

212112201100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27972076830.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212112201100001 its reverse (100001102211212), we get a palindrome (312113303311213).

The spelling of 212112201100001 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred one million, one hundred thousand, one".