13112220403 has 2 divisors, whose sum is σ = 13112220404. Its totient is φ = 13112220402.

The previous prime is 13112220389. The next prime is 13112220409. The reversal of 13112220403 is 30402221131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13112220403 - 2²¹ = 13110123251 is a prime.

It is not a weakly prime, because it can be changed into another prime (13112220409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556110201 + 6556110202.

It is an arithmetic number, because the mean of its divisors is an integer number (6556110202).

Almost surely, 2^13112220403 is an apocalyptic number.

13112220403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112220403 is an equidigital number, since it uses as much as digits as its factorization.

13112220403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13112220403 its reverse (30402221131), we get a palindrome (43514441534).

It can be divided in two parts, 131122 and 20403, that added together give a triangular number (151525 = T₅₅₀).

The spelling of 13112220403 in words is "thirteen billion, one hundred twelve million, two hundred twenty thousand, four hundred three".