111021000012112 has 80 divisors (see below), whose sum is σ = 228924653308560. Its totient is φ = 51977199181824.

The previous prime is 111021000012077. The next prime is 111021000012127. The reversal of 111021000012112 is 211210000120111.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 28899053614656 + 82121946397456 = 5375784^2 + 9062116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111021000012092 and 111021000012101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281525214 + ... + 1281611842.

It is an arithmetic number, because the mean of its divisors is an integer number (2861558166357).

Almost surely, 2^{111021000012112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021000012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114462326654280).

111021000012112 is an abundant number, since it is smaller than the sum of its proper divisors (117903653296448).

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

111021000012112 is a wasteful number, since it uses less digits than its factorization.

111021000012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110768 (or 110762 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111021000012112 its reverse (211210000120111), we get a palindrome (322231000132223).

The spelling of 111021000012112 in words is "one hundred eleven trillion, twenty-one billion, twelve thousand, one hundred twelve".