2121400240003 has 8 divisors (see below), whose sum is σ = 2317993513920. Its totient is φ = 1925430083880.

The previous prime is 2121400239991. The next prime is 2121400240039. The reversal of 2121400240003 is 3000420041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121400240003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121400247003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155772325 + ... + 155785942.

It is an arithmetic number, because the mean of its divisors is an integer number (289749189240).

Almost surely, 2^{2121400240003} is an apocalyptic number.

2121400240003 is a deficient number, since it is larger than the sum of its proper divisors (196593273917).

2121400240003 is a wasteful number, since it uses less digits than its factorization.

2121400240003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311558897.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2121400240003 its reverse (3000420041212), we get a palindrome (5121820281215).

The spelling of 2121400240003 in words is "two trillion, one hundred twenty-one billion, four hundred million, two hundred forty thousand, three".