213120110101 has 4 divisors (see below), whose sum is σ = 213126534432. Its totient is φ = 213113685772.

The previous prime is 213120110087. The next prime is 213120110143. The reversal of 213120110101 is 101011021312.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-213120110101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120110171) 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, 3162145 + ... + 3228838.

It is an arithmetic number, because the mean of its divisors is an integer number (53281633608).

Almost surely, 2^213120110101 is an apocalyptic number.

It is an amenable number.

213120110101 is a deficient number, since it is larger than the sum of its proper divisors (6424331).

213120110101 is an equidigital number, since it uses as much as digits as its factorization.

213120110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424330.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 213120110101 its reverse (101011021312), we get a palindrome (314131131413).

The spelling of 213120110101 in words is "two hundred thirteen billion, one hundred twenty million, one hundred ten thousand, one hundred one".