1210221122112 has 168 divisors, whose sum is σ = 3567634012800. Its totient is φ = 391953282048.

The previous prime is 1210221122083. The next prime is 1210221122129. The reversal of 1210221122112 is 2112211220121.

1210221122112 is a `hidden beast` number, since 1 + 210 + 221 + 1 + 221 + 12 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15283839 + ... + 15362817.

Almost surely, 2^{1210221122112} is an apocalyptic number.

1210221122112 is a gapful number since it is divisible by the number (12) 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 1210221122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783817006400).

1210221122112 is an abundant number, since it is smaller than the sum of its proper divisors (2357412890688).

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

1210221122112 is a wasteful number, since it uses less digits than its factorization.

1210221122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79753 (or 79740 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1210221122112 its reverse (2112211220121), we get a palindrome (3322432342233).

The spelling of 1210221122112 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".