111020101020120 has 64 divisors (see below), whose sum is σ = 333061267500000. Its totient is φ = 29605274544128.

The previous prime is 111020101020119. The next prime is 111020101020131. The reversal of 111020101020120 is 21020101020111.

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 = 111020101020096 and 111020101020105.

It is a congruent number.

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, 47734006 + ... + 50005754.

Almost surely, 2^{111020101020120} is an apocalyptic number.

111020101020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020101020120 is an abundant number, since it is smaller than the sum of its proper divisors (222041166479880).

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

111020101020120 is a wasteful number, since it uses less digits than its factorization.

111020101020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679012 (or 2679008 counting only the distinct ones).

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

Adding to 111020101020120 its reverse (21020101020111), we get a palindrome (132040202040231).

Subtracting from 111020101020120 its reverse (21020101020111), we obtain a palindrome (90000000000009).

The spelling of 111020101020120 in words is "one hundred eleven trillion, twenty billion, one hundred one million, twenty thousand, one hundred twenty".