11102121111 has 16 divisors (see below), whose sum is σ = 14832028800. Its totient is φ = 7386832608.

The previous prime is 11102121103. The next prime is 11102121139. The reversal of 11102121111 is 11112120111.

It is not a de Polignac number, because 11102121111 - 2³ = 11102121103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102121911) 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, 5820820 + ... + 5822726.

It is an arithmetic number, because the mean of its divisors is an integer number (927001800).

Almost surely, 2^11102121111 is an apocalyptic number.

11102121111 is a deficient number, since it is larger than the sum of its proper divisors (3729907689).

11102121111 is a wasteful number, since it uses less digits than its factorization.

11102121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718.

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

Adding to 11102121111 its reverse (11112120111), we get a palindrome (22214241222).

The spelling of 11102121111 in words is "eleven billion, one hundred two million, one hundred twenty-one thousand, one hundred eleven".