2000121 has 4 divisors (see below), whose sum is σ = 2666832. Its totient is φ = 1333412.

The previous prime is 2000113. The next prime is 2000143. The reversal of 2000121 is 1210002.

It is a happy number.

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 2000121 - 2³ = 2000113 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2000221) 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, 333351 + ... + 333356.

It is an arithmetic number, because the mean of its divisors is an integer number (666708).

2^2000121 is an apocalyptic number.

It is an amenable number.

2000121 is a deficient number, since it is larger than the sum of its proper divisors (666711).

2000121 is an equidigital number, since it uses as much as digits as its factorization.

2000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666710.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2000121 is about 1414.2563416863. The cubic root of 2000121 is about 125.9946457790.

Adding to 2000121 its reverse (1210002), we get a palindrome (3210123).

The spelling of 2000121 in words is "two million, one hundred twenty-one", and thus it is an aban number.