111020200120 has 16 divisors (see below), whose sum is σ = 249795450360. Its totient is φ = 44408080032.

The previous prime is 111020200073. The next prime is 111020200133. The reversal of 111020200120 is 21002020111.

It is a super-3 number, since 3×111020200120³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111020200097 and 111020200106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387752462 + ... + 1387752541.

Almost surely, 2^111020200120 is an apocalyptic number.

111020200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020200120 is an abundant number, since it is smaller than the sum of its proper divisors (138775250240).

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

111020200120 is a wasteful number, since it uses less digits than its factorization.

111020200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775505014 (or 2775505010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111020200120 its reverse (21002020111), we get a palindrome (132022220231).

The spelling of 111020200120 in words is "one hundred eleven billion, twenty million, two hundred thousand, one hundred twenty".