213213101022001 has 4 divisors (see below), whose sum is σ = 213536641388400. Its totient is φ = 212889560655604.

The previous prime is 213213101021993. The next prime is 213213101022011. The reversal of 213213101022001 is 100220101312312.

213213101022001 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213213101022001 - 2³ = 213213101021993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213213101022001.

It is not an unprimeable number, because it can be changed into a prime (213213101022011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161770182211 + ... + 161770183528.

It is an arithmetic number, because the mean of its divisors is an integer number (53384160347100).

Almost surely, 2^{213213101022001} is an apocalyptic number.

It is an amenable number.

213213101022001 is a deficient number, since it is larger than the sum of its proper divisors (323540366399).

213213101022001 is an equidigital number, since it uses as much as digits as its factorization.

213213101022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323540366398.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213213101022001 its reverse (100220101312312), we get a palindrome (313433202334313).

The spelling of 213213101022001 in words is "two hundred thirteen trillion, two hundred thirteen billion, one hundred one million, twenty-two thousand, one".