11421021203 has 4 divisors (see below), whose sum is σ = 11531905008. Its totient is φ = 11310137400.

The previous prime is 11421021191. The next prime is 11421021217. The reversal of 11421021203 is 30212012411.

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 11421021203 - 2²² = 11416826899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421021223) 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, 55441748 + ... + 55441953.

It is an arithmetic number, because the mean of its divisors is an integer number (2882976252).

Almost surely, 2^11421021203 is an apocalyptic number.

11421021203 is a deficient number, since it is larger than the sum of its proper divisors (110883805).

11421021203 is a wasteful number, since it uses less digits than its factorization.

11421021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110883804.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11421021203 its reverse (30212012411), we get a palindrome (41633033614).

The spelling of 11421021203 in words is "eleven billion, four hundred twenty-one million, twenty-one thousand, two hundred three".