111002120220 has 48 divisors (see below), whose sum is σ = 324319242240. Its totient is φ = 28313583936.

The previous prime is 111002120219. The next prime is 111002120227. The reversal of 111002120220 is 22021200111.

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 = 111002120196 and 111002120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002120227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40216780 + ... + 40219539.

It is an arithmetic number, because the mean of its divisors is an integer number (6756650880).

Almost surely, 2^111002120220 is an apocalyptic number.

111002120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111002120220 is an abundant number, since it is smaller than the sum of its proper divisors (213317122020).

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

111002120220 is a wasteful number, since it uses less digits than its factorization.

111002120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80436354 (or 80436352 counting only the distinct ones).

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

Adding to 111002120220 its reverse (22021200111), we get a palindrome (133023320331).

The spelling of 111002120220 in words is "one hundred eleven billion, two million, one hundred twenty thousand, two hundred twenty".