2120734301265 has 96 divisors (see below), whose sum is σ = 3984337019520. Its totient is φ = 1039338252288.

The previous prime is 2120734301263. The next prime is 2120734301269. The reversal of 2120734301265 is 5621034370212.

2120734301265 is a `hidden beast` number, since 2 + 1 + 20 + 73 + 4 + 301 + 265 = 666.

It is not a de Polignac number, because 2120734301265 - 2¹ = 2120734301263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120734301263) 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 95 ways as a sum of consecutive naturals, for example, 88245271 + ... + 88269299.

It is an arithmetic number, because the mean of its divisors is an integer number (41503510620).

Almost surely, 2^{2120734301265} is an apocalyptic number.

It is an amenable number.

2120734301265 is a deficient number, since it is larger than the sum of its proper divisors (1863602718255).

2120734301265 is a wasteful number, since it uses less digits than its factorization.

2120734301265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26783 (or 26780 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 2120734301265 its reverse (5621034370212), we get a palindrome (7741768671477).

The spelling of 2120734301265 in words is "two trillion, one hundred twenty billion, seven hundred thirty-four million, three hundred one thousand, two hundred sixty-five".