10012021120020 has 24 divisors (see below), whose sum is σ = 28033659136224. Its totient is φ = 2669872298656.

The previous prime is 10012021120007. The next prime is 10012021120033. The reversal of 10012021120020 is 2002112021001.

It is an interprime number because it is at equal distance from previous prime (10012021120007) and next prime (10012021120033).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10012021119978 and 10012021120005.

It is a congruent number.

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, 83433509274 + ... + 83433509393.

It is an arithmetic number, because the mean of its divisors is an integer number (1168069130676).

Almost surely, 2^{10012021120020} is an apocalyptic number.

10012021120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012021120020 is an abundant number, since it is smaller than the sum of its proper divisors (18021638016204).

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

10012021120020 is a wasteful number, since it uses less digits than its factorization.

10012021120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166867018679 (or 166867018677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10012021120020 its reverse (2002112021001), we get a palindrome (12014133141021).

The spelling of 10012021120020 in words is "ten trillion, twelve billion, twenty-one million, one hundred twenty thousand, twenty".