111121310012 has 48 divisors (see below), whose sum is σ = 199057606272. Its totient is φ = 54265199040.

The previous prime is 111121309979. The next prime is 111121310017. The reversal of 111121310012 is 210013121111.

It is a super-2 number, since 2×111121310012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121310017) 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, 18576062 + ... + 18582042.

It is an arithmetic number, because the mean of its divisors is an integer number (4147033464).

Almost surely, 2^111121310012 is an apocalyptic number.

It is an amenable number.

111121310012 is a deficient number, since it is larger than the sum of its proper divisors (87936296260).

111121310012 is a wasteful number, since it uses less digits than its factorization.

111121310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698 (or 6696 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111121310012 its reverse (210013121111), we get a palindrome (321134431123).

The spelling of 111121310012 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred ten thousand, twelve".