212001120001 has 4 divisors (see below), whose sum is σ = 231273949104. Its totient is φ = 192728290900.

The previous prime is 212001119987. The next prime is 212001120011. The reversal of 212001120001 is 100021100212.

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 212001120001 - 2¹⁹ = 212000595713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212001120001.

It is not an unprimeable number, because it can be changed into a prime (212001120011) 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, 9636414535 + ... + 9636414556.

It is an arithmetic number, because the mean of its divisors is an integer number (57818487276).

Almost surely, 2^212001120001 is an apocalyptic number.

It is an amenable number.

212001120001 is a deficient number, since it is larger than the sum of its proper divisors (19272829103).

212001120001 is a wasteful number, since it uses less digits than its factorization.

212001120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19272829102.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212001120001 its reverse (100021100212), we get a palindrome (312022220213).

The spelling of 212001120001 in words is "two hundred twelve billion, one million, one hundred twenty thousand, one".