1220101220112 has 80 divisors (see below), whose sum is σ = 3196191293760. Its totient is φ = 400992823296.

The previous prime is 1220101220101. The next prime is 1220101220113. The reversal of 1220101220112 is 2110221010221.

It is a junction number, because it is equal to n+sod(n) for n = 1220101220091 and 1220101220100.

It is not an unprimeable number, because it can be changed into a prime (1220101220113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10520908 + ... + 10636244.

It is an arithmetic number, because the mean of its divisors is an integer number (39952391172).

Almost surely, 2^{1220101220112} is an apocalyptic number.

1220101220112 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 1220101220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598095646880).

1220101220112 is an abundant number, since it is smaller than the sum of its proper divisors (1976090073648).

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

1220101220112 is a wasteful number, since it uses less digits than its factorization.

1220101220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118440 (or 118434 counting only the distinct ones).

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

Adding to 1220101220112 its reverse (2110221010221), we get a palindrome (3330322230333).

The spelling of 1220101220112 in words is "one trillion, two hundred twenty billion, one hundred one million, two hundred twenty thousand, one hundred twelve".