10101220116 has 96 divisors (see below), whose sum is σ = 26879784960. Its totient is φ = 2926710144.

The previous prime is 10101220111. The next prime is 10101220117. The reversal of 10101220116 is 61102210101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10101220095 and 10101220104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101220111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 484785 + ... + 505191.

It is an arithmetic number, because the mean of its divisors is an integer number (279997760).

Almost surely, 2^10101220116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10101220116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13439892480).

10101220116 is an abundant number, since it is smaller than the sum of its proper divisors (16778564844).

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

10101220116 is a wasteful number, since it uses less digits than its factorization.

10101220116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20613 (or 20611 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 10101220116 its reverse (61102210101), we get a palindrome (71203430217).

The spelling of 10101220116 in words is "ten billion, one hundred one million, two hundred twenty thousand, one hundred sixteen".