112121211120210 has 96 divisors (see below), whose sum is σ = 293407931568960. Its totient is φ = 29704904820864.

The previous prime is 112121211120203. The next prime is 112121211120253. The reversal of 112121211120210 is 12021112121211.

It is a happy number.

112121211120210 is a `hidden beast` number, since 1 + 1 + 2 + 121 + 211 + 120 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115651749 + ... + 116617191.

It is an arithmetic number, because the mean of its divisors is an integer number (3056332620510).

Almost surely, 2^{112121211120210} is an apocalyptic number.

112121211120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 112121211120210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146703965784480).

112121211120210 is an abundant number, since it is smaller than the sum of its proper divisors (181286720448750).

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

112121211120210 is a wasteful number, since it uses less digits than its factorization.

112121211120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973832 (or 973829 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 112121211120210 its reverse (12021112121211), we get a palindrome (124142323241421).

The spelling of 112121211120210 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred ten".