213120121123033 has 4 divisors (see below), whose sum is σ = 213403902909568. Its totient is φ = 212836339336500.

The previous prime is 213120121122973. The next prime is 213120121123051. The reversal of 213120121123033 is 330321121021312.

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 213120121123033 - 2⁹ = 213120121122521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213120121122989 and 213120121123007.

It is not an unprimeable number, because it can be changed into a prime (213120121123093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141890892141 + ... + 141890893642.

It is an arithmetic number, because the mean of its divisors is an integer number (53350975727392).

Almost surely, 2^{213120121123033} is an apocalyptic number.

It is an amenable number.

213120121123033 is a deficient number, since it is larger than the sum of its proper divisors (283781786535).

213120121123033 is an equidigital number, since it uses as much as digits as its factorization.

213120121123033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283781786534.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 213120121123033 its reverse (330321121021312), we get a palindrome (543441242144345).

The spelling of 213120121123033 in words is "two hundred thirteen trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-three thousand, thirty-three".