2061000021 has 8 divisors (see below), whose sum is σ = 2785644160. Its totient is φ = 1355177952.

The previous prime is 2061000017. The next prime is 2061000023. The reversal of 2061000021 is 1200001602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2061000021 - 2² = 2061000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2060999970 and 2061000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061000023) 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, 4705261 + ... + 4705698.

It is an arithmetic number, because the mean of its divisors is an integer number (348205520).

Almost surely, 2^2061000021 is an apocalyptic number.

It is an amenable number.

2061000021 is a deficient number, since it is larger than the sum of its proper divisors (724644139).

2061000021 is an equidigital number, since it uses as much as digits as its factorization.

2061000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9411035.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2061000021 is about 45398.2380825512. The cubic root of 2061000021 is about 1272.6021874519.

Adding to 2061000021 its reverse (1200001602), we get a palindrome (3261001623).

The spelling of 2061000021 in words is "two billion, sixty-one million, twenty-one", and thus it is an aban number and an uban number.