21415122404103 has 32 divisors (see below), whose sum is σ = 29634260173056. Its totient is φ = 13746572921088.

The previous prime is 21415122404083. The next prime is 21415122404129. The reversal of 21415122404103 is 30140422151412.

It is not a de Polignac number, because 21415122404103 - 2²⁸ = 21414853968647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21415122404153) 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, 2704801 + ... + 7081397.

It is an arithmetic number, because the mean of its divisors is an integer number (926070630408).

Almost surely, 2^{21415122404103} is an apocalyptic number.

21415122404103 is a deficient number, since it is larger than the sum of its proper divisors (8219137768953).

21415122404103 is a wasteful number, since it uses less digits than its factorization.

21415122404103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377183.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21415122404103 its reverse (30140422151412), we get a palindrome (51555544555515).

The spelling of 21415122404103 in words is "twenty-one trillion, four hundred fifteen billion, one hundred twenty-two million, four hundred four thousand, one hundred three".