1210112100000 has 216 divisors, whose sum is σ = 4301298253980. Its totient is φ = 322696320000.

The previous prime is 1210112099929. The next prime is 1210112100049. The reversal of 1210112100000 is 12110121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 270895266576 + 939216833424 = 520476^2 + 969132^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 227716 + ... + 1572284.

Almost surely, 2^{1210112100000} is an apocalyptic number.

1210112100000 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 1210112100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150649126990).

1210112100000 is an abundant number, since it is smaller than the sum of its proper divisors (3091186153980).

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

1210112100000 is an equidigital number, since it uses as much as digits as its factorization.

1210112100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344610 (or 1344579 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1210112100000 its reverse (12110121), we get a palindrome (1210124210121).

The spelling of 1210112100000 in words is "one trillion, two hundred ten billion, one hundred twelve million, one hundred thousand".