112121031000000 has 392 divisors, whose sum is σ = 404522524545408. Its totient is φ = 27180848000000.

The previous prime is 112121030999969. The next prime is 112121031000001. The reversal of 112121031000000 is 130121211.

It is a super-2 number, since 2×112121031000000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 112121031000000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121031000001) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 31301197 + ... + 34698803.

Almost surely, 2^{112121031000000} is an apocalyptic number.

112121031000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112121031000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202261262272704).

112121031000000 is an abundant number, since it is smaller than the sum of its proper divisors (292401493545408).

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

112121031000000 is an frugal number, since it uses more digits than its factorization.

112121031000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397663 (or 3397628 counting only the distinct ones).

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

Adding to 112121031000000 its reverse (130121211), we get a palindrome (112121161121211).

The spelling of 112121031000000 in words is "one hundred twelve trillion, one hundred twenty-one billion, thirty-one million", and thus it is an aban number.