100011112122120 has 64 divisors (see below), whose sum is σ = 300195780635520. Its totient is φ = 26655190408704.

The previous prime is 100011112122079. The next prime is 100011112122203. The reversal of 100011112122120 is 21221211110001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100011112122120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225394477 + ... + 225837756.

It is an arithmetic number, because the mean of its divisors is an integer number (4690559072430).

Almost surely, 2^{100011112122120} is an apocalyptic number.

100011112122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011112122120 is an abundant number, since it is smaller than the sum of its proper divisors (200184668513400).

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

100011112122120 is a wasteful number, since it uses less digits than its factorization.

100011112122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451234094 (or 451234090 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100011112122120 its reverse (21221211110001), we get a palindrome (121232323232121).

The spelling of 100011112122120 in words is "one hundred trillion, eleven billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty".