2124312154321 has 64 divisors (see below), whose sum is σ = 2629480734720. Its totient is φ = 1675708784640.

The previous prime is 2124312154291. The next prime is 2124312154331. The reversal of 2124312154321 is 1234512134212.

It is a cyclic number.

It is not a de Polignac number, because 2124312154321 - 2¹⁵ = 2124312121553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2124312154331) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 500896761 + ... + 500901001.

It is an arithmetic number, because the mean of its divisors is an integer number (41085636480).

Almost surely, 2^{2124312154321} is an apocalyptic number.

It is an amenable number.

2124312154321 is a deficient number, since it is larger than the sum of its proper divisors (505168580399).

2124312154321 is a wasteful number, since it uses less digits than its factorization.

2124312154321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894.

The product of its digits is 11520, while the sum is 31.

Adding to 2124312154321 its reverse (1234512134212), we get a palindrome (3358824288533).

The spelling of 2124312154321 in words is "two trillion, one hundred twenty-four billion, three hundred twelve million, one hundred fifty-four thousand, three hundred twenty-one".