100112212222220 has 48 divisors (see below), whose sum is σ = 229470558460416. Its totient is φ = 36384983448000.

The previous prime is 100112212222213. The next prime is 100112212222271. The reversal of 100112212222220 is 22222212211001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 100112212222192 and 100112212222201.

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, 121195946 + ... + 122019185.

It is an arithmetic number, because the mean of its divisors is an integer number (4780636634592).

Almost surely, 2^{100112212222220} is an apocalyptic number.

100112212222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100112212222220 is an abundant number, since it is smaller than the sum of its proper divisors (129358346238196).

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

100112212222220 is a wasteful number, since it uses less digits than its factorization.

100112212222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243217022 (or 243217020 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 100112212222220 its reverse (22222212211001), we get a palindrome (122334424433221).

The spelling of 100112212222220 in words is "one hundred trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty".