210021122221001 has 24 divisors (see below), whose sum is σ = 263108732322240. Its totient is φ = 166167180279072.

The previous prime is 210021122220971. The next prime is 210021122221063. The reversal of 210021122221001 is 100122221120012.

210021122221001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210021122221001 - 2⁴⁶ = 139652378043337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021122221901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28242710 + ... + 34895456.

It is an arithmetic number, because the mean of its divisors is an integer number (10962863846760).

Almost surely, 2^{210021122221001} is an apocalyptic number.

It is an amenable number.

210021122221001 is a deficient number, since it is larger than the sum of its proper divisors (53087610101239).

210021122221001 is a wasteful number, since it uses less digits than its factorization.

210021122221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702333 (or 6702326 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210021122221001 its reverse (100122221120012), we get a palindrome (310143343341013).

The spelling of 210021122221001 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one".