2021020012 has 24 divisors (see below), whose sum is σ = 3893717520. Its totient is φ = 910215360.

The previous prime is 2021020007. The next prime is 2021020021. The reversal of 2021020012 is 2100201202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205903 + ... + 215494.

It is an arithmetic number, because the mean of its divisors is an integer number (162238230).

Almost surely, 2^2021020012 is an apocalyptic number.

2021020012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2021020012 is a deficient number, since it is larger than the sum of its proper divisors (1872697508).

2021020012 is a wasteful number, since it uses less digits than its factorization.

2021020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421521 (or 421519 counting only the distinct ones).

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

The square root of 2021020012 is about 44955.7561609189. The cubic root of 2021020012 is about 1264.3196020252.

Adding to 2021020012 its reverse (2100201202), we get a palindrome (4121221214).

The spelling of 2021020012 in words is "two billion, twenty-one million, twenty thousand, twelve".