213120021203 has 4 divisors (see below), whose sum is σ = 213123711360. Its totient is φ = 213116331048.

The previous prime is 213120021187. The next prime is 213120021223. The reversal of 213120021203 is 302120021312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213120021203 - 2⁴ = 213120021187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120021223) 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, 1757048 + ... + 1874421.

It is an arithmetic number, because the mean of its divisors is an integer number (53280927840).

Almost surely, 2^213120021203 is an apocalyptic number.

213120021203 is a deficient number, since it is larger than the sum of its proper divisors (3690157).

213120021203 is an equidigital number, since it uses as much as digits as its factorization.

213120021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690156.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213120021203 its reverse (302120021312), we get a palindrome (515240042515).

The spelling of 213120021203 in words is "two hundred thirteen billion, one hundred twenty million, twenty-one thousand, two hundred three".