11111111202102 has 16 divisors (see below), whose sum is σ = 22451317481712. Its totient is φ = 3665521221120.

The previous prime is 11111111202097. The next prime is 11111111202211. The reversal of 11111111202102 is 20120211111111.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9545627599 + ... + 9545628762.

It is an arithmetic number, because the mean of its divisors is an integer number (1403207342607).

Almost surely, 2^{11111111202102} is an apocalyptic number.

11111111202102 is an abundant number, since it is smaller than the sum of its proper divisors (11340206279610).

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

11111111202102 is a wasteful number, since it uses less digits than its factorization.

11111111202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091256463.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111111202102 its reverse (20120211111111), we get a palindrome (31231322313213).

Subtracting 11111111202102 from its reverse (20120211111111), we obtain a palindrome (9009099909009).

The spelling of 11111111202102 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, one hundred two".