2021012199 has 6 divisors (see below), whose sum is σ = 2919239856. Its totient is φ = 1347341460.

The previous prime is 2021012183. The next prime is 2021012243. The reversal of 2021012199 is 9912101202.

It is not a de Polignac number, because 2021012199 - 2⁴ = 2021012183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021012129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112278447 + ... + 112278464.

It is an arithmetic number, because the mean of its divisors is an integer number (486539976).

Almost surely, 2^2021012199 is an apocalyptic number.

2021012199 is a deficient number, since it is larger than the sum of its proper divisors (898227657).

2021012199 is a wasteful number, since it uses less digits than its factorization.

2021012199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224556917 (or 224556914 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 2021012199 is about 44955.6692642875. The cubic root of 2021012199 is about 1264.3179727915.

The spelling of 2021012199 in words is "two billion, twenty-one million, twelve thousand, one hundred ninety-nine".