2111550165100 has 18 divisors (see below), whose sum is σ = 4582063858484. Its totient is φ = 844620066000.

The previous prime is 2111550165073. The next prime is 2111550165107. The reversal of 2111550165100 is 15610551112.

It is not an unprimeable number, because it can be changed into a prime (2111550165107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10557750726 + ... + 10557750925.

Almost surely, 2^{2111550165100} is an apocalyptic number.

2111550165100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111550165100 is an abundant number, since it is smaller than the sum of its proper divisors (2470513693384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111550165100 is a wasteful number, since it uses less digits than its factorization.

2111550165100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21115501665 (or 21115501658 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 2111550165100 in words is "two trillion, one hundred eleven billion, five hundred fifty million, one hundred sixty-five thousand, one hundred".