11211032403 has 12 divisors (see below), whose sum is σ = 17046014440. Its totient is φ = 7080651936.

The previous prime is 11211032387. The next prime is 11211032407. The reversal of 11211032403 is 30423011211.

It is not a de Polignac number, because 11211032403 - 2⁴ = 11211032387 is a prime.

It is a super-2 number, since 2×11211032403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211032407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32780626 + ... + 32780967.

Almost surely, 2^11211032403 is an apocalyptic number.

11211032403 is a deficient number, since it is larger than the sum of its proper divisors (5834982037).

11211032403 is a wasteful number, since it uses less digits than its factorization.

11211032403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65561618 (or 65561615 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11211032403 its reverse (30423011211), we get a palindrome (41634043614).

The spelling of 11211032403 in words is "eleven billion, two hundred eleven million, thirty-two thousand, four hundred three".