2121200193 has 16 divisors (see below), whose sum is σ = 3301079040. Its totient is φ = 1186324176.

The previous prime is 2121200183. The next prime is 2121200209. The reversal of 2121200193 is 3910021212.

It is not a de Polignac number, because 2121200193 - 2¹⁰ = 2121199169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2121200183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073583 + ... + 1075556.

It is an arithmetic number, because the mean of its divisors is an integer number (206317440).

Almost surely, 2^2121200193 is an apocalyptic number.

It is an amenable number.

2121200193 is a deficient number, since it is larger than the sum of its proper divisors (1179878847).

2121200193 is a wasteful number, since it uses less digits than its factorization.

2121200193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149196.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 2121200193 is about 46056.4891519100. The cubic root of 2121200193 is about 1284.8740342944.

The spelling of 2121200193 in words is "two billion, one hundred twenty-one million, two hundred thousand, one hundred ninety-three".