100120001120 has 48 divisors (see below), whose sum is σ = 238972029408. Its totient is φ = 39635128320.

The previous prime is 100120001119. The next prime is 100120001129. The reversal of 100120001120 is 21100021001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 100120001098 and 100120001107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120001129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3209996 + ... + 3241035.

It is an arithmetic number, because the mean of its divisors is an integer number (4978583946).

Almost surely, 2^100120001120 is an apocalyptic number.

100120001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120001120 is an abundant number, since it is smaller than the sum of its proper divisors (138852028288).

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

100120001120 is an equidigital number, since it uses as much as digits as its factorization.

100120001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6451143 (or 6451135 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100120001120 its reverse (21100021001), we get a palindrome (121220022121).

The spelling of 100120001120 in words is "one hundred billion, one hundred twenty million, one thousand, one hundred twenty".