1220122001112 has 128 divisors (see below), whose sum is σ = 3556059978240. Its totient is φ = 341659422720.

The previous prime is 1220122001101. The next prime is 1220122001141. The reversal of 1220122001112 is 2111002210221.

It is a junction number, because it is equal to n+sod(n) for n = 1220122001091 and 1220122001100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1942312 + ... + 2492552.

It is an arithmetic number, because the mean of its divisors is an integer number (27781718580).

Almost surely, 2^{1220122001112} is an apocalyptic number.

1220122001112 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 1220122001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778029989120).

1220122001112 is an abundant number, since it is smaller than the sum of its proper divisors (2335937977128).

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

1220122001112 is a wasteful number, since it uses less digits than its factorization.

1220122001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550521 (or 550517 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220122001112 its reverse (2111002210221), we get a palindrome (3331124211333).

The spelling of 1220122001112 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one thousand, one hundred twelve".