11111121102 has 8 divisors (see below), whose sum is σ = 22222242216. Its totient is φ = 3703707032.

The previous prime is 11111121041. The next prime is 11111121121. The reversal of 11111121102 is 20112111111.

It is a sphenic number, since it is the product of 3 distinct primes.

11111121102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925926753 + ... + 925926764.

It is an arithmetic number, because the mean of its divisors is an integer number (2777780277).

Almost surely, 2^11111121102 is an apocalyptic number.

11111121102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11111121102 is a wasteful number, since it uses less digits than its factorization.

11111121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851853522.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111121102 its reverse (20112111111), we get a palindrome (31223232213).

Subtracting 11111121102 from its reverse (20112111111), we obtain a palindrome (9000990009).

The spelling of 11111121102 in words is "eleven billion, one hundred eleven million, one hundred twenty-one thousand, one hundred two".