11421615203 has 4 divisors (see below), whose sum is σ = 11423284368. Its totient is φ = 11419946040.

The previous prime is 11421615197. The next prime is 11421615251. The reversal of 11421615203 is 30251612411.

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 11421615203 - 2⁴ = 11421615187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421615253) 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, 824276 + ... + 838017.

It is an arithmetic number, because the mean of its divisors is an integer number (2855821092).

Almost surely, 2^11421615203 is an apocalyptic number.

11421615203 is a deficient number, since it is larger than the sum of its proper divisors (1669165).

11421615203 is an equidigital number, since it uses as much as digits as its factorization.

11421615203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669164.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 11421615203 in words is "eleven billion, four hundred twenty-one million, six hundred fifteen thousand, two hundred three".