2121331300424 has 32 divisors (see below), whose sum is σ = 4561224333120. Its totient is φ = 906039105216.

The previous prime is 2121331300399. The next prime is 2121331300453. The reversal of 2121331300424 is 4240031331212.

It is a junction number, because it is equal to n+sod(n) for n = 2121331300393 and 2121331300402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64626794 + ... + 64659609.

It is an arithmetic number, because the mean of its divisors is an integer number (142538260410).

Almost surely, 2^{2121331300424} is an apocalyptic number.

It is an amenable number.

2121331300424 is an abundant number, since it is smaller than the sum of its proper divisors (2439893032696).

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

2121331300424 is a wasteful number, since it uses less digits than its factorization.

2121331300424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129286709 (or 129286705 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 2121331300424 its reverse (4240031331212), we get a palindrome (6361362631636).

The spelling of 2121331300424 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-one million, three hundred thousand, four hundred twenty-four".