2129416110981 has 24 divisors (see below), whose sum is σ = 3119763366720. Its totient is φ = 1399338628800.

The previous prime is 2129416110937. The next prime is 2129416111033. The reversal of 2129416110981 is 1890116149212.

It is a happy number.

2129416110981 is a `hidden beast` number, since 2 + 1 + 29 + 4 + 1 + 611 + 0 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 2129416110981 - 2⁶ = 2129416110917 is a prime.

It is a super-2 number, since 2×2129416110981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129416110901) 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 23 ways as a sum of consecutive naturals, for example, 2918830 + ... + 3574688.

It is an arithmetic number, because the mean of its divisors is an integer number (129990140280).

Almost surely, 2^{2129416110981} is an apocalyptic number.

It is an amenable number.

2129416110981 is a deficient number, since it is larger than the sum of its proper divisors (990347255739).

2129416110981 is a wasteful number, since it uses less digits than its factorization.

2129416110981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661017 (or 661014 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 2129416110981 in words is "two trillion, one hundred twenty-nine billion, four hundred sixteen million, one hundred ten thousand, nine hundred eighty-one".