213111121203 has 16 divisors (see below), whose sum is σ = 321677166240. Its totient is φ = 139393436832.

The previous prime is 213111121163. The next prime is 213111121211. The reversal of 213111121203 is 302121111312.

It is not a de Polignac number, because 213111121203 - 2²² = 213106926899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213111121273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74460876 + ... + 74463737.

It is an arithmetic number, because the mean of its divisors is an integer number (20104822890).

Almost surely, 2^213111121203 is an apocalyptic number.

213111121203 is a deficient number, since it is larger than the sum of its proper divisors (108566045037).

213111121203 is a wasteful number, since it uses less digits than its factorization.

213111121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148924675 (or 148924669 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213111121203 its reverse (302121111312), we get a palindrome (515232232515).

The spelling of 213111121203 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty-one thousand, two hundred three".