11003211421 has 8 divisors (see below), whose sum is σ = 11158940160. Its totient is φ = 10848196128.

The previous prime is 11003211413. The next prime is 11003211433. The reversal of 11003211421 is 12411230011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11003211421 - 2³ = 11003211413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003211395 and 11003211404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003211721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147261 + ... + 209026.

It is an arithmetic number, because the mean of its divisors is an integer number (1394867520).

Almost surely, 2^11003211421 is an apocalyptic number.

It is an amenable number.

11003211421 is a deficient number, since it is larger than the sum of its proper divisors (155728739).

11003211421 is an equidigital number, since it uses as much as digits as its factorization.

11003211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356723.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11003211421 its reverse (12411230011), we get a palindrome (23414441432).

The spelling of 11003211421 in words is "eleven billion, three million, two hundred eleven thousand, four hundred twenty-one".