100011222120 has 64 divisors (see below), whose sum is σ = 303004333440. Its totient is φ = 26405600000.

The previous prime is 100011222107. The next prime is 100011222137. The reversal of 100011222120 is 21222110001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100011222096 and 100011222105.

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, 4113756 + ... + 4137995.

It is an arithmetic number, because the mean of its divisors is an integer number (4734442710).

Almost surely, 2^100011222120 is an apocalyptic number.

100011222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011222120 is an abundant number, since it is smaller than the sum of its proper divisors (202993111320).

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

100011222120 is a wasteful number, since it uses less digits than its factorization.

100011222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251866 (or 8251862 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100011222120 its reverse (21222110001), we get a palindrome (121233332121).

The spelling of 100011222120 in words is "one hundred billion, eleven million, two hundred twenty-two thousand, one hundred twenty".