2123131055320 has 32 divisors (see below), whose sum is σ = 5211321682320. Its totient is φ = 772047656320.

The previous prime is 2123131055293. The next prime is 2123131055341. The reversal of 2123131055320 is 235501313212.

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, 2412648487 + ... + 2412649366.

Almost surely, 2^{2123131055320} is an apocalyptic number.

2123131055320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123131055320 is an abundant number, since it is smaller than the sum of its proper divisors (3088190627000).

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

2123131055320 is a wasteful number, since it uses less digits than its factorization.

2123131055320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825297875 (or 4825297871 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 2123131055320 its reverse (235501313212), we get a palindrome (2358632368532).

The spelling of 2123131055320 in words is "two trillion, one hundred twenty-three billion, one hundred thirty-one million, fifty-five thousand, three hundred twenty".