2155210011341 has 4 divisors (see below), whose sum is σ = 2161315422492. Its totient is φ = 2149104600192.

The previous prime is 2155210011329. The next prime is 2155210011343. The reversal of 2155210011341 is 1431100125512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1723260052900 + 431949958441 = 1312730^2 + 657229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155210011341 is a prime.

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 2155210011341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155210011343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052705046 + ... + 3052705751.

It is an arithmetic number, because the mean of its divisors is an integer number (540328855623).

Almost surely, 2^{2155210011341} is an apocalyptic number.

It is an amenable number.

2155210011341 is a deficient number, since it is larger than the sum of its proper divisors (6105411151).

2155210011341 is an equidigital number, since it uses as much as digits as its factorization.

2155210011341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105411150.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 2155210011341 its reverse (1431100125512), we get a palindrome (3586310136853).

The spelling of 2155210011341 in words is "two trillion, one hundred fifty-five billion, two hundred ten million, eleven thousand, three hundred forty-one".