211121000203 has 4 divisors (see below), whose sum is σ = 211133826648. Its totient is φ = 211108173760.

The previous prime is 211121000159. The next prime is 211121000213. The reversal of 211121000203 is 302000121112.

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 211121000203 - 2²⁵ = 211087445771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121000213) 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, 6388501 + ... + 6421462.

It is an arithmetic number, because the mean of its divisors is an integer number (52783456662).

Almost surely, 2^211121000203 is an apocalyptic number.

211121000203 is a deficient number, since it is larger than the sum of its proper divisors (12826445).

211121000203 is a wasteful number, since it uses less digits than its factorization.

211121000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12826444.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 211121000203 its reverse (302000121112), we get a palindrome (513121121315).

The spelling of 211121000203 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred three", and thus it is an aban number.