21403133204103 has 32 divisors (see below), whose sum is σ = 36253329592320. Its totient is φ = 12225224924640.

The previous prime is 21403133204093. The next prime is 21403133204111. The reversal of 21403133204103 is 30140233130412.

It is a happy number.

21403133204103 is a `hidden beast` number, since 2 + 1 + 40 + 313 + 3 + 204 + 103 = 666.

It is not a de Polignac number, because 21403133204103 - 2¹⁶ = 21403133138567 is a prime.

It is a super-2 number, since 2×21403133204103² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403133204153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23330775 + ... + 24230792.

It is an arithmetic number, because the mean of its divisors is an integer number (1132916549760).

Almost surely, 2^{21403133204103} is an apocalyptic number.

21403133204103 is a deficient number, since it is larger than the sum of its proper divisors (14850196388217).

21403133204103 is a wasteful number, since it uses less digits than its factorization.

21403133204103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47563964 (or 47563958 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21403133204103 its reverse (30140233130412), we get a palindrome (51543366334515).

The spelling of 21403133204103 in words is "twenty-one trillion, four hundred three billion, one hundred thirty-three million, two hundred four thousand, one hundred three".