10001111210220 has 192 divisors, whose sum is σ = 30469462095744. Its totient is φ = 2436385996800.

The previous prime is 10001111210197. The next prime is 10001111210239. The reversal of 10001111210220 is 2201211110001.

It is a super-3 number, since 3×10001111210220³ (a number of 40 digits) contains 333 as substring.

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 = 10001111210196 and 10001111210205.

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 63 ways as a sum of consecutive naturals, for example, 59233920 + ... + 59402520.

It is an arithmetic number, because the mean of its divisors is an integer number (158695115082).

Almost surely, 2^{10001111210220} is an apocalyptic number.

10001111210220 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 10001111210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15234731047872).

10001111210220 is an abundant number, since it is smaller than the sum of its proper divisors (20468350885524).

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

10001111210220 is a wasteful number, since it uses less digits than its factorization.

10001111210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169412 (or 169410 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10001111210220 its reverse (2201211110001), we get a palindrome (12202322320221).

The spelling of 10001111210220 in words is "ten trillion, one billion, one hundred eleven million, two hundred ten thousand, two hundred twenty".