212210122001 has 4 divisors (see below), whose sum is σ = 224693070372. Its totient is φ = 199727173632.

The previous prime is 212210121997. The next prime is 212210122009. The reversal of 212210122001 is 100221012212.

212210122001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71171568400 + 141038553601 = 266780^2 + 375551^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210122001 - 2² = 212210121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212210122009) 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 3 ways as a sum of consecutive naturals, for example, 6241474160 + ... + 6241474193.

It is an arithmetic number, because the mean of its divisors is an integer number (56173267593).

Almost surely, 2^212210122001 is an apocalyptic number.

It is an amenable number.

212210122001 is a deficient number, since it is larger than the sum of its proper divisors (12482948371).

212210122001 is a wasteful number, since it uses less digits than its factorization.

212210122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12482948370.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212210122001 its reverse (100221012212), we get a palindrome (312431134213).

The spelling of 212210122001 in words is "two hundred twelve billion, two hundred ten million, one hundred twenty-two thousand, one".