213120001213 has 4 divisors (see below), whose sum is σ = 243565715680. Its totient is φ = 182674286748.

The previous prime is 213120001181. The next prime is 213120001267. The reversal of 213120001213 is 312100021312.

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 213120001213 - 2⁵ = 213120001181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120001313) 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, 15222857223 + ... + 15222857236.

It is an arithmetic number, because the mean of its divisors is an integer number (60891428920).

Almost surely, 2^213120001213 is an apocalyptic number.

It is an amenable number.

213120001213 is a deficient number, since it is larger than the sum of its proper divisors (30445714467).

213120001213 is an equidigital number, since it uses as much as digits as its factorization.

213120001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445714466.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213120001213 its reverse (312100021312), we get a palindrome (525220022525).

The spelling of 213120001213 in words is "two hundred thirteen billion, one hundred twenty million, one thousand, two hundred thirteen".