100112222221220 has 24 divisors (see below), whose sum is σ = 229347999998208. Its totient is φ = 36404444444000.

The previous prime is 100112222221213. The next prime is 100112222221259. The reversal of 100112222221220 is 22122222211001.

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 = 100112222221192 and 100112222221201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227527777556 + ... + 227527777995.

It is an arithmetic number, because the mean of its divisors is an integer number (9556166666592).

Almost surely, 2^{100112222221220} is an apocalyptic number.

100112222221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100112222221220 is an abundant number, since it is smaller than the sum of its proper divisors (129235777776988).

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

100112222221220 is a wasteful number, since it uses less digits than its factorization.

100112222221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455055555571 (or 455055555569 counting only the distinct ones).

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

Adding to 100112222221220 its reverse (22122222211001), we get a palindrome (122234444432221).

It can be divided in two parts, 1001 and 12222221220, that added together give a palindrome (12222222221).

The spelling of 100112222221220 in words is "one hundred trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty".