111021111120 has 40 divisors (see below), whose sum is σ = 344165445216. Its totient is φ = 29605629568.

The previous prime is 111021111119. The next prime is 111021111137. The reversal of 111021111120 is 21111120111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×111021111120² (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 = 111021111096 and 111021111105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231293742 + ... + 231294221.

Almost surely, 2^111021111120 is an apocalyptic number.

111021111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021111120 is an abundant number, since it is smaller than the sum of its proper divisors (233144334096).

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

111021111120 is a wasteful number, since it uses less digits than its factorization.

111021111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462587979 (or 462587973 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111021111120 its reverse (21111120111), we get a palindrome (132132231231).

The spelling of 111021111120 in words is "one hundred eleven billion, twenty-one million, one hundred eleven thousand, one hundred twenty".