100000100111220 has 288 divisors, whose sum is σ = 314838950025600. Its totient is φ = 25661455561728.

The previous prime is 100000100111189. The next prime is 100000100111291. The reversal of 100000100111220 is 22111001000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3152274279 + ... + 3152306001.

It is an arithmetic number, because the mean of its divisors is an integer number (1093190798700).

Almost surely, 2^{100000100111220} is an apocalyptic number.

100000100111220 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 100000100111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157419475012800).

100000100111220 is an abundant number, since it is smaller than the sum of its proper divisors (214838849914380).

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

100000100111220 is a wasteful number, since it uses less digits than its factorization.

100000100111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33759 (or 33754 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100000100111220 its reverse (22111001000001), we get a palindrome (122111101111221).

The spelling of 100000100111220 in words is "one hundred trillion, one hundred million, one hundred eleven thousand, two hundred twenty".