2121003124404 has 24 divisors (see below), whose sum is σ = 5164181520960. Its totient is φ = 676261865664.

The previous prime is 2121003124367. The next prime is 2121003124411. The reversal of 2121003124404 is 4044213001212.

It is a super-3 number, since 3×2121003124404³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3842396689 + ... + 3842397240.

It is an arithmetic number, because the mean of its divisors is an integer number (215174230040).

Almost surely, 2^{2121003124404} is an apocalyptic number.

It is an amenable number.

2121003124404 is an abundant number, since it is smaller than the sum of its proper divisors (3043178396556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121003124404 is a wasteful number, since it uses less digits than its factorization.

2121003124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684793959 (or 7684793957 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2121003124404 its reverse (4044213001212), we get a palindrome (6165216125616).

The spelling of 2121003124404 in words is "two trillion, one hundred twenty-one billion, three million, one hundred twenty-four thousand, four hundred four".