111920202 has 12 divisors (see below), whose sum is σ = 242493810. Its totient is φ = 37306728.

The previous prime is 111920191. The next prime is 111920213. The reversal of 111920202 is 202029111.

It is an interprime number because it is at equal distance from previous prime (111920191) and next prime (111920213).

It can be written as a sum of positive squares in only one way, i.e., 61921161 + 49999041 = 7869^2 + 7071^2 .

It is a super-2 number, since 2×111920202² = 25052263231441608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6217789 = 111920202 / (1 + 1 + 1 + 9 + 2 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3108877 + ... + 3108912.

Almost surely, 2^111920202 is an apocalyptic number.

111920202 is an abundant number, since it is smaller than the sum of its proper divisors (130573608).

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

111920202 is a wasteful number, since it uses less digits than its factorization.

111920202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217797 (or 6217794 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 111920202 is about 10579.2344713594. The cubic root of 111920202 is about 481.9139467479.

Adding to 111920202 its reverse (202029111), we get a palindrome (313949313).

It can be divided in two parts, 1119 and 20202, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 111920202 in words is "one hundred eleven million, nine hundred twenty thousand, two hundred two".