2121100093 has 12 divisors (see below), whose sum is σ = 2597266560. Its totient is φ = 1722396312.

The previous prime is 2121100021. The next prime is 2121100097. The reversal of 2121100093 is 3900011212.

It is not a de Polignac number, because 2121100093 - 2²⁹ = 1584229181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 2121100093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121100097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138221 + ... + 1140082.

It is an arithmetic number, because the mean of its divisors is an integer number (216438880).

Almost surely, 2^2121100093 is an apocalyptic number.

It is an amenable number.

2121100093 is a deficient number, since it is larger than the sum of its proper divisors (476166467).

2121100093 is a wasteful number, since it uses less digits than its factorization.

2121100093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278336 (or 2278329 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2121100093 is about 46055.4024301167. The cubic root of 2121100093 is about 1284.8538227943.

The spelling of 2121100093 in words is "two billion, one hundred twenty-one million, one hundred thousand, ninety-three".