212111210001 has 16 divisors (see below), whose sum is σ = 290253680640. Its totient is φ = 137736098640.

The previous prime is 212111209969. The next prime is 212111210023. The reversal of 212111210001 is 100012111212.

It is not a de Polignac number, because 212111210001 - 2⁵ = 212111209969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212111210071) 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, 5981281 + ... + 6016638.

It is an arithmetic number, because the mean of its divisors is an integer number (18140855040).

Almost surely, 2^212111210001 is an apocalyptic number.

It is an amenable number.

212111210001 is a deficient number, since it is larger than the sum of its proper divisors (78142470639).

212111210001 is a wasteful number, since it uses less digits than its factorization.

212111210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11998076.

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

Adding to 212111210001 its reverse (100012111212), we get a palindrome (312123321213).

The spelling of 212111210001 in words is "two hundred twelve billion, one hundred eleven million, two hundred ten thousand, one".