2121003323020 has 24 divisors (see below), whose sum is σ = 4454134595568. Its totient is φ = 848396068800.

The previous prime is 2121003323011. The next prime is 2121003323053. The reversal of 2121003323020 is 203233001212.

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, 5484430 + ... + 5858410.

It is an arithmetic number, because the mean of its divisors is an integer number (185588941482).

Almost surely, 2^{2121003323020} is an apocalyptic number.

2121003323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121003323020 is an abundant number, since it is smaller than the sum of its proper divisors (2333131272548).

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

2121003323020 is a wasteful number, since it uses less digits than its factorization.

2121003323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657561 (or 657559 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 2121003323020 its reverse (203233001212), we get a palindrome (2324236324232).

The spelling of 2121003323020 in words is "two trillion, one hundred twenty-one billion, three million, three hundred twenty-three thousand, twenty".