111121100202 has 192 divisors, whose sum is σ = 288681200640. Its totient is φ = 27824988672.

The previous prime is 111121100159. The next prime is 111121100257. The reversal of 111121100202 is 202001121111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15203833 + ... + 15211139.

It is an arithmetic number, because the mean of its divisors is an integer number (1503547920).

Almost surely, 2^111121100202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111121100202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144340600320).

111121100202 is an abundant number, since it is smaller than the sum of its proper divisors (177560100438).

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

111121100202 is a wasteful number, since it uses less digits than its factorization.

111121100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433 (or 7414 counting only the distinct ones).

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

Adding to 111121100202 its reverse (202001121111), we get a palindrome (313122221313).

The spelling of 111121100202 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred thousand, two hundred two".