100011211112120 has 256 divisors, whose sum is σ = 297817621171200. Its totient is φ = 29263232655360.

The previous prime is 100011211112101. The next prime is 100011211112177. The reversal of 100011211112120 is 21211112110001.

It is a super-2 number, since 2×100011211112120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100011211112095 and 100011211112104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17912939 + ... + 22823141.

It is an arithmetic number, because the mean of its divisors is an integer number (1163350082700).

Almost surely, 2^{100011211112120} is an apocalyptic number.

100011211112120 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 100011211112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148908810585600).

100011211112120 is an abundant number, since it is smaller than the sum of its proper divisors (197806410059080).

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

100011211112120 is a wasteful number, since it uses less digits than its factorization.

100011211112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4910638 (or 4910634 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100011211112120 its reverse (21211112110001), we get a palindrome (121222323222121).

The spelling of 100011211112120 in words is "one hundred trillion, eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty".