111020020102 has 32 divisors (see below), whose sum is σ = 169730966592. Its totient is φ = 54455890944.

The previous prime is 111020020063. The next prime is 111020020103. The reversal of 111020020102 is 201020020111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020020103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9325818 + ... + 9337714.

It is an arithmetic number, because the mean of its divisors is an integer number (5304092706).

Almost surely, 2^111020020102 is an apocalyptic number.

111020020102 is a deficient number, since it is larger than the sum of its proper divisors (58710946490).

111020020102 is a wasteful number, since it uses less digits than its factorization.

111020020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12432.

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

Adding to 111020020102 its reverse (201020020111), we get a palindrome (312040040213).

Subtracting 111020020102 from its reverse (201020020111), we obtain a palindrome (90000000009).

The spelling of 111020020102 in words is "one hundred eleven billion, twenty million, twenty thousand, one hundred two".