2012020021 has 8 divisors (see below), whose sum is σ = 2196067104. Its totient is φ = 1828162320.

The previous prime is 2012019917. The next prime is 2012020033. The reversal of 2012020021 is 1200202102.

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

It is a cyclic number.

It is not a de Polignac number, because 2012020021 - 2²⁷ = 1877802293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012020051) 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, 24651 + ... + 68056.

It is an arithmetic number, because the mean of its divisors is an integer number (274508388).

Almost surely, 2^2012020021 is an apocalyptic number.

It is an amenable number.

2012020021 is a deficient number, since it is larger than the sum of its proper divisors (184047083).

2012020021 is a wasteful number, since it uses less digits than its factorization.

2012020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94691.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2012020021 is about 44855.5461565234. The cubic root of 2012020021 is about 1262.4400564422.

Adding to 2012020021 its reverse (1200202102), we get a palindrome (3212222123).

The spelling of 2012020021 in words is "two billion, twelve million, twenty thousand, twenty-one".