111121000012 has 48 divisors (see below), whose sum is σ = 218444728320. Its totient is φ = 49434762960.

The previous prime is 111120999991. The next prime is 111121000019. The reversal of 111121000012 is 210000121111.

111121000012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (111121000019) 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, 28189 + ... + 472267.

It is an arithmetic number, because the mean of its divisors is an integer number (4550931840).

Almost surely, 2^111121000012 is an apocalyptic number.

It is an amenable number.

111121000012 is a deficient number, since it is larger than the sum of its proper divisors (107323728308).

111121000012 is a wasteful number, since it uses less digits than its factorization.

111121000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444163 (or 444139 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111121000012 its reverse (210000121111), we get a palindrome (321121121123).

It can be divided in two parts, 1111 and 21000012, that multiplied together give a palindrome (23331013332).

The spelling of 111121000012 in words is "one hundred eleven billion, one hundred twenty-one million, twelve", and thus it is an aban number.