212101120001 has 8 divisors (see below), whose sum is σ = 215612599464. Its totient is φ = 208590750720.

The previous prime is 212101119961. The next prime is 212101120037. The reversal of 212101120001 is 100021101212.

It can be written as a sum of positive squares in 4 ways, for example, as 9557017600 + 202544102401 = 97760^2 + 450049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212101120001 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 (212101120061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112211 + ... + 660903.

It is an arithmetic number, because the mean of its divisors is an integer number (26951574933).

Almost surely, 2^212101120001 is an apocalyptic number.

It is an amenable number.

212101120001 is a deficient number, since it is larger than the sum of its proper divisors (3511479463).

212101120001 is an equidigital number, since it uses as much as digits as its factorization.

212101120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555091.

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

Adding to 212101120001 its reverse (100021101212), we get a palindrome (312122221213).

The spelling of 212101120001 in words is "two hundred twelve billion, one hundred one million, one hundred twenty thousand, one".