100221111120 has 80 divisors (see below), whose sum is σ = 334584335232. Its totient is φ = 24669811200.

The previous prime is 100221111101. The next prime is 100221111121. The reversal of 100221111120 is 21111122001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×100221111120² (a number of 23 digits) contains 22 as substring.

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 = 100221111096 and 100221111105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221111121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16057956 + ... + 16064195.

Almost surely, 2^100221111120 is an apocalyptic number.

100221111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221111120 is an abundant number, since it is smaller than the sum of its proper divisors (234363224112).

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

100221111120 is a wasteful number, since it uses less digits than its factorization.

100221111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32122180 (or 32122174 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100221111120 its reverse (21111122001), we get a palindrome (121332233121).

The spelling of 100221111120 in words is "one hundred billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty".