10002111220020 has 192 divisors, whose sum is σ = 28556131000320. Its totient is φ = 2615392862208.

The previous prime is 10002111220009. The next prime is 10002111220039. The reversal of 10002111220020 is 2002211120001.

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 = 10002111219978 and 10002111220005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 568389862 + ... + 568407458.

It is an arithmetic number, because the mean of its divisors is an integer number (148729848960).

Almost surely, 2^{10002111220020} is an apocalyptic number.

10002111220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10002111220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14278065500160).

10002111220020 is an abundant number, since it is smaller than the sum of its proper divisors (18554019780300).

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

10002111220020 is a wasteful number, since it uses less digits than its factorization.

10002111220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18602 (or 18600 counting only the distinct ones).

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

Adding to 10002111220020 its reverse (2002211120001), we get a palindrome (12004322340021).

The spelling of 10002111220020 in words is "ten trillion, two billion, one hundred eleven million, two hundred twenty thousand, twenty".