2012203109 has 4 divisors (see below), whose sum is σ = 2299660704. Its totient is φ = 1724745516.

The previous prime is 2012203069. The next prime is 2012203129. The reversal of 2012203109 is 9013022102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2012203109 - 2²⁴ = 1995425893 is a prime.

It is a super-2 number, since 2×2012203109² = 8097922703738531762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012203129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143728787 + ... + 143728800.

It is an arithmetic number, because the mean of its divisors is an integer number (574915176).

Almost surely, 2^2012203109 is an apocalyptic number.

It is an amenable number.

2012203109 is a deficient number, since it is larger than the sum of its proper divisors (287457595).

2012203109 is an equidigital number, since it uses as much as digits as its factorization.

2012203109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287457594.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2012203109 is about 44857.5869725513. The cubic root of 2012203109 is about 1262.4783480782.

The spelling of 2012203109 in words is "two billion, twelve million, two hundred three thousand, one hundred nine".