11111102012 has 24 divisors (see below), whose sum is σ = 20597585904. Its totient is φ = 5226374912.

The previous prime is 11111101951. The next prime is 11111102059. The reversal of 11111102012 is 21020111111.

It is a super-3 number, since 3×11111102012³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111101984 and 11111102002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118118 + ... + 190194.

It is an arithmetic number, because the mean of its divisors is an integer number (858232746).

Almost surely, 2^11111102012 is an apocalyptic number.

It is an amenable number.

11111102012 is a deficient number, since it is larger than the sum of its proper divisors (9486483892).

11111102012 is a wasteful number, since it uses less digits than its factorization.

11111102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74365 (or 74363 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111102012 its reverse (21020111111), we get a palindrome (32131213123).

Subtracting 11111102012 from its reverse (21020111111), we obtain a palindrome (9909009099).

The spelling of 11111102012 in words is "eleven billion, one hundred eleven million, one hundred two thousand, twelve".