11003103421 has 2 divisors, whose sum is σ = 11003103422. Its totient is φ = 11003103420.

The previous prime is 11003103407. The next prime is 11003103481. The reversal of 11003103421 is 12430130011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10947436900 + 55666521 = 104630^2 + 7461^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003103421 - 2³³ = 2413168829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11003103395 and 11003103404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11003103481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501551710 + 5501551711.

It is an arithmetic number, because the mean of its divisors is an integer number (5501551711).

Almost surely, 2^11003103421 is an apocalyptic number.

It is an amenable number.

11003103421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003103421 is an equidigital number, since it uses as much as digits as its factorization.

11003103421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11003103421 its reverse (12430130011), we get a palindrome (23433233432).

The spelling of 11003103421 in words is "eleven billion, three million, one hundred three thousand, four hundred twenty-one".