213120121333 has 4 divisors (see below), whose sum is σ = 243565852960. Its totient is φ = 182674389708.

The previous prime is 213120121309. The next prime is 213120121351. The reversal of 213120121333 is 333121021312.

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 213120121333 - 2⁵ = 213120121301 is a prime.

It is a super-2 number, since 2×213120121333² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120121303) 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, 15222865803 + ... + 15222865816.

It is an arithmetic number, because the mean of its divisors is an integer number (60891463240).

Almost surely, 2^213120121333 is an apocalyptic number.

It is an amenable number.

213120121333 is a deficient number, since it is larger than the sum of its proper divisors (30445731627).

213120121333 is an equidigital number, since it uses as much as digits as its factorization.

213120121333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445731626.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 213120121333 its reverse (333121021312), we get a palindrome (546241142645).

The spelling of 213120121333 in words is "two hundred thirteen billion, one hundred twenty million, one hundred twenty-one thousand, three hundred thirty-three".