2000000121 has 48 divisors (see below), whose sum is σ = 3276370944. Its totient is φ = 1079845536.

The previous prime is 2000000099. The next prime is 2000000137. The reversal of 2000000121 is 1210000002.

It is a happy number.

It is not a de Polignac number, because 2000000121 - 2⁵ = 2000000089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2000000141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277060 + ... + 284186.

It is an arithmetic number, because the mean of its divisors is an integer number (68257728).

Almost surely, 2^2000000121 is an apocalyptic number.

2000000121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2000000121 is a deficient number, since it is larger than the sum of its proper divisors (1276370823).

2000000121 is a wasteful number, since it uses less digits than its factorization.

2000000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7250 (or 7243 counting only the distinct ones).

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

The square root of 2000000121 is about 44721.3609028169. The cubic root of 2000000121 is about 1259.9210753033.

Adding to 2000000121 its reverse (1210000002), we get a palindrome (3210000123).

The spelling of 2000000121 in words is "two billion, one hundred twenty-one", and thus it is an aban number.