2155124420116 has 24 divisors (see below), whose sum is σ = 3791984232960. Its totient is φ = 1071715842912.

The previous prime is 2155124420047. The next prime is 2155124420131. The reversal of 2155124420116 is 6110244215512.

It is a super-2 number, since 2×2155124420116² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1379140 + ... + 2492443.

It is an arithmetic number, because the mean of its divisors is an integer number (157999343040).

Almost surely, 2^{2155124420116} is an apocalyptic number.

It is an amenable number.

2155124420116 is a deficient number, since it is larger than the sum of its proper divisors (1636859812844).

2155124420116 is a wasteful number, since it uses less digits than its factorization.

2155124420116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872343 (or 3872341 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 2155124420116 its reverse (6110244215512), we get a palindrome (8265368635628).

The spelling of 2155124420116 in words is "two trillion, one hundred fifty-five billion, one hundred twenty-four million, four hundred twenty thousand, one hundred sixteen".