20100212000020 has 24 divisors (see below), whose sum is σ = 42217446688200. Its totient is φ = 8038751183232.

The previous prime is 20100211999979. The next prime is 20100212000047. The reversal of 20100212000020 is 2000021200102.

It can be written as a sum of positive squares in 4 ways, for example, as 5486519198224 + 14613692801796 = 2342332^2 + 3822786^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20100211999970 and 20100212000006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83227455 + ... + 83468614.

It is an arithmetic number, because the mean of its divisors is an integer number (1759060278675).

Almost surely, 2^{20100212000020} is an apocalyptic number.

20100212000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100212000020 is an abundant number, since it is smaller than the sum of its proper divisors (22117234688180).

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

20100212000020 is a wasteful number, since it uses less digits than its factorization.

20100212000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166702107 (or 166702105 counting only the distinct ones).

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

Adding to 20100212000020 its reverse (2000021200102), we get a palindrome (22100233200122).

The spelling of 20100212000020 in words is "twenty trillion, one hundred billion, two hundred twelve million, twenty", and thus it is an aban number.