2000823121 has 4 divisors (see below), whose sum is σ = 2182716144. Its totient is φ = 1818930100.

The previous prime is 2000823089. The next prime is 2000823179. The reversal of 2000823121 is 1213280002.

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 2000823121 - 2⁵ = 2000823089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000883121) 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, 90946495 + ... + 90946516.

It is an arithmetic number, because the mean of its divisors is an integer number (545679036).

Almost surely, 2^2000823121 is an apocalyptic number.

It is an amenable number.

2000823121 is a deficient number, since it is larger than the sum of its proper divisors (181893023).

2000823121 is a wasteful number, since it uses less digits than its factorization.

2000823121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181893022.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2000823121 is about 44730.5613758647. The cubic root of 2000823121 is about 1260.0938707674.

It can be divided in two parts, 200082 and 3121, that added together give a triangular number (203203 = T₆₃₇).

The spelling of 2000823121 in words is "two billion, eight hundred twenty-three thousand, one hundred twenty-one".