212001321101 has 4 divisors (see below), whose sum is σ = 212002288572. Its totient is φ = 212000353632.

The previous prime is 212001321079. The next prime is 212001321127. The reversal of 212001321101 is 101123100212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33406335076 + 178594986025 = 182774^2 + 422605^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001321101 - 2²² = 211997126797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001521101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19391 + ... + 651443.

It is an arithmetic number, because the mean of its divisors is an integer number (53000572143).

Almost surely, 2^212001321101 is an apocalyptic number.

It is an amenable number.

212001321101 is a deficient number, since it is larger than the sum of its proper divisors (967471).

212001321101 is an equidigital number, since it uses as much as digits as its factorization.

212001321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967470.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212001321101 its reverse (101123100212), we get a palindrome (313124421313).

The spelling of 212001321101 in words is "two hundred twelve billion, one million, three hundred twenty-one thousand, one hundred one".