2121404103 has 72 divisors (see below), whose sum is σ = 3957437952. Its totient is φ = 1070207424.

The previous prime is 2121404081. The next prime is 2121404111. The reversal of 2121404103 is 3014041212.

2121404103 is a `hidden beast` number, since 212 + 1 + 40 + 410 + 3 = 666.

It is not a de Polignac number, because 2121404103 - 2⁵ = 2121404071 is a prime.

It is a super-3 number, since 3×2121404103³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121404003) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 240550 + ... + 249212.

It is an arithmetic number, because the mean of its divisors is an integer number (54964416).

Almost surely, 2^2121404103 is an apocalyptic number.

2121404103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121404103 is a deficient number, since it is larger than the sum of its proper divisors (1836033849).

2121404103 is a wasteful number, since it uses less digits than its factorization.

2121404103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8725 (or 8709 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2121404103 is about 46058.7027932833. The cubic root of 2121404103 is about 1284.9152044254.

Adding to 2121404103 its reverse (3014041212), we get a palindrome (5135445315).

The spelling of 2121404103 in words is "two billion, one hundred twenty-one million, four hundred four thousand, one hundred three".