2021010012 has 72 divisors (see below), whose sum is σ = 6145776000. Its totient is φ = 547039008.

The previous prime is 2021009999. The next prime is 2021010053. The reversal of 2021010012 is 2100101202.

It is a super-3 number, since 3×2021010012³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2021009976 and 2021010003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206262 + ... + 215837.

It is an arithmetic number, because the mean of its divisors is an integer number (85358000).

Almost surely, 2^2021010012 is an apocalyptic number.

It is an amenable number.

2021010012 is an abundant number, since it is smaller than the sum of its proper divisors (4124765988).

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

2021010012 is a wasteful number, since it uses less digits than its factorization.

2021010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422135 (or 422130 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2021010012 is about 44955.6449403187. The cubic root of 2021010012 is about 1264.3175167388.

Adding to 2021010012 its reverse (2100101202), we get a palindrome (4121111214).

The spelling of 2021010012 in words is "two billion, twenty-one million, ten thousand, twelve".