11110111021012 has 12 divisors (see below), whose sum is σ = 19504027709460. Its totient is φ = 5537531675456.

The previous prime is 11110111020997. The next prime is 11110111021013. The reversal of 11110111021012 is 21012011101111.

It can be written as a sum of positive squares in 2 ways, for example, as 212414061456 + 10897696959556 = 460884^2 + 3301166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11110111020983 and 11110111021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110111021013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4380957337 + ... + 4380959872.

It is an arithmetic number, because the mean of its divisors is an integer number (1625335642455).

Almost surely, 2^{11110111021012} is an apocalyptic number.

It is an amenable number.

11110111021012 is a deficient number, since it is larger than the sum of its proper divisors (8393916688448).

11110111021012 is a wasteful number, since it uses less digits than its factorization.

11110111021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761917530 (or 8761917528 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11110111021012 its reverse (21012011101111), we get a palindrome (32122122122123).

The spelling of 11110111021012 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, twenty-one thousand, twelve".