10000012020 has 48 divisors (see below), whose sum is σ = 28277278848. Its totient is φ = 2640265600.

The previous prime is 10000012019. The next prime is 10000012027. The reversal of 10000012020 is 2021000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000012027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819024 + ... + 831143.

It is an arithmetic number, because the mean of its divisors is an integer number (589109976).

Almost surely, 2^10000012020 is an apocalyptic number.

10000012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10000012020 is an abundant number, since it is smaller than the sum of its proper divisors (18277266828).

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

10000012020 is a wasteful number, since it uses less digits than its factorization.

10000012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650280 (or 1650278 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 10000012020 its reverse (2021000001), we get a palindrome (12021012021).

The spelling of 10000012020 in words is "ten billion, twelve thousand, twenty".