11203522421 has 16 divisors (see below), whose sum is σ = 13795719168. Its totient is φ = 8859974400.

The previous prime is 11203522417. The next prime is 11203522439. The reversal of 11203522421 is 12422530211.

It is a cyclic number.

It is not a de Polignac number, because 11203522421 - 2² = 11203522417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203522471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162941 + ... + 221261.

It is an arithmetic number, because the mean of its divisors is an integer number (862232448).

Almost surely, 2^11203522421 is an apocalyptic number.

It is an amenable number.

11203522421 is a deficient number, since it is larger than the sum of its proper divisors (2592196747).

11203522421 is a wasteful number, since it uses less digits than its factorization.

11203522421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60452.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 11203522421 in words is "eleven billion, two hundred three million, five hundred twenty-two thousand, four hundred twenty-one".