10001212200020 has 24 divisors (see below), whose sum is σ = 21012062045184. Its totient is φ = 3998672227616.

The previous prime is 10001212200013. The next prime is 10001212200041. The reversal of 10001212200020 is 2000221210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001212199974 and 10001212200010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113245532 + ... + 113333811.

It is an arithmetic number, because the mean of its divisors is an integer number (875502585216).

Almost surely, 2^{10001212200020} is an apocalyptic number.

10001212200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001212200020 is an abundant number, since it is smaller than the sum of its proper divisors (11010849845164).

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

10001212200020 is a wasteful number, since it uses less digits than its factorization.

10001212200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226581559 (or 226581557 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10001212200020 its reverse (2000221210001), we get a palindrome (12001433410021).

The spelling of 10001212200020 in words is "ten trillion, one billion, two hundred twelve million, two hundred thousand, twenty".