111111111102 has 32 divisors (see below), whose sum is σ = 233165237760. Its totient is φ = 35230995360.

The previous prime is 111111111101. The next prime is 111111111103. The reversal of 111111111102 is 201111111111.

It is an interprime number because it is at equal distance from previous prime (111111111101) and next prime (111111111103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111111101) 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, 2199202 + ... + 2249157.

It is an arithmetic number, because the mean of its divisors is an integer number (7286413680).

Almost surely, 2^111111111102 is an apocalyptic number.

111111111102 is an abundant number, since it is smaller than the sum of its proper divisors (122054126658).

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

111111111102 is a wasteful number, since it uses less digits than its factorization.

111111111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448568.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 111111111102 its reverse (201111111111), we get a palindrome (312222222213).

Subtracting 111111111102 from its reverse (201111111111), we obtain a palindrome (90000000009).

The spelling of 111111111102 in words is "one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred two".