2140120135105 has 4 divisors (see below), whose sum is σ = 2568144162132. Its totient is φ = 1712096108080.

The previous prime is 2140120135081. The next prime is 2140120135129. The reversal of 2140120135105 is 5015310210412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2140120135081) and next prime (2140120135129).

It can be written as a sum of positive squares in 2 ways, for example, as 1167074017344 + 973046117761 = 1080312^2 + 986431^2 .

It is not a de Polignac number, because 2140120135105 - 2¹³ = 2140120126913 is a prime.

It is a super-2 number, since 2×2140120135105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140120135105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214012013506 + ... + 214012013515.

It is an arithmetic number, because the mean of its divisors is an integer number (642036040533).

Almost surely, 2^{2140120135105} is an apocalyptic number.

It is an amenable number.

2140120135105 is a deficient number, since it is larger than the sum of its proper divisors (428024027027).

2140120135105 is an equidigital number, since it uses as much as digits as its factorization.

2140120135105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428024027026.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 2140120135105 its reverse (5015310210412), we get a palindrome (7155430345517).

The spelling of 2140120135105 in words is "two trillion, one hundred forty billion, one hundred twenty million, one hundred thirty-five thousand, one hundred five".