213201103121 has 4 divisors (see below), whose sum is σ = 216814681200. Its totient is φ = 209587525044.

The previous prime is 213201103099. The next prime is 213201103153. The reversal of 213201103121 is 121301102312.

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 213201103121 - 2¹⁴ = 213201086737 is a prime.

It is a super-2 number, since 2×213201103121² (a number of 23 digits) contains 22 as substring.

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 213201103121.

It is not an unprimeable number, because it can be changed into a prime (213201103421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806788951 + ... + 1806789068.

It is an arithmetic number, because the mean of its divisors is an integer number (54203670300).

Almost surely, 2^213201103121 is an apocalyptic number.

It is an amenable number.

213201103121 is a deficient number, since it is larger than the sum of its proper divisors (3613578079).

213201103121 is an equidigital number, since it uses as much as digits as its factorization.

213201103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613578078.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213201103121 its reverse (121301102312), we get a palindrome (334502205433).

The spelling of 213201103121 in words is "two hundred thirteen billion, two hundred one million, one hundred three thousand, one hundred twenty-one".