2000121020 has 24 divisors (see below), whose sum is σ = 4201242864. Its totient is φ = 799860096.

The previous prime is 2000121001. The next prime is 2000121029. The reversal of 2000121020 is 201210002.

It is a junction number, because it is equal to n+sod(n) for n = 2000120989 and 2000121007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102272 + ... + 120248.

It is an arithmetic number, because the mean of its divisors is an integer number (175051786).

Almost surely, 2^2000121020 is an apocalyptic number.

2000121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000121020 is an abundant number, since it is smaller than the sum of its proper divisors (2201121844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2000121020 is a wasteful number, since it uses less digits than its factorization.

2000121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23549 (or 23547 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2000121020 is about 44722.7125742614. The cubic root of 2000121020 is about 1259.9464619899.

Adding to 2000121020 its reverse (201210002), we get a palindrome (2201331022).

The spelling of 2000121020 in words is "two billion, one hundred twenty-one thousand, twenty".