11121111102 has 32 divisors (see below), whose sum is σ = 23605323264. Its totient is φ = 3480867200.

The previous prime is 11121111101. The next prime is 11121111107. The reversal of 11121111102 is 20111112111.

It is a super-2 number, since 2×11121111102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121111101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 82524 + ... + 170447.

It is an arithmetic number, because the mean of its divisors is an integer number (737666352).

Almost surely, 2^11121111102 is an apocalyptic number.

11121111102 is an abundant number, since it is smaller than the sum of its proper divisors (12484212162).

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

11121111102 is a wasteful number, since it uses less digits than its factorization.

11121111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253424.

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

Adding to 11121111102 its reverse (20111112111), we get a palindrome (31232223213).

The spelling of 11121111102 in words is "eleven billion, one hundred twenty-one million, one hundred eleven thousand, one hundred two".