212120222001 has 8 divisors (see below), whose sum is σ = 290470934784. Its totient is φ = 137591495280.

The previous prime is 212120221997. The next prime is 212120222003. The reversal of 212120222001 is 100222021212.

212120222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212120222001 - 2² = 212120221997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212120222003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955496385 + ... + 955496606.

It is an arithmetic number, because the mean of its divisors is an integer number (36308866848).

Almost surely, 2^212120222001 is an apocalyptic number.

It is an amenable number.

212120222001 is a deficient number, since it is larger than the sum of its proper divisors (78350712783).

212120222001 is a wasteful number, since it uses less digits than its factorization.

212120222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910993031.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212120222001 its reverse (100222021212), we get a palindrome (312342243213).

The spelling of 212120222001 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, one".