212100201001001 has 4 divisors (see below), whose sum is σ = 212100242677392. Its totient is φ = 212100159324612.

The previous prime is 212100201000973. The next prime is 212100201001033. The reversal of 212100201001001 is 100100102001212.

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 212100201001001 - 2⁶ = 212100201000937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100201001081) 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, 11936951 + ... + 23805276.

It is an arithmetic number, because the mean of its divisors is an integer number (53025060669348).

Almost surely, 2^{212100201001001} is an apocalyptic number.

It is an amenable number.

212100201001001 is a deficient number, since it is larger than the sum of its proper divisors (41676391).

212100201001001 is an equidigital number, since it uses as much as digits as its factorization.

212100201001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41676390.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212100201001001 its reverse (100100102001212), we get a palindrome (312200303002213).

The spelling of 212100201001001 in words is "two hundred twelve trillion, one hundred billion, two hundred one million, one thousand, one".