1220100110112 has 96 divisors (see below), whose sum is σ = 3450167239680. Its totient is φ = 375302430720.

The previous prime is 1220100110101. The next prime is 1220100110137. The reversal of 1220100110112 is 2110110010221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4049089 + ... + 4339967.

It is an arithmetic number, because the mean of its divisors is an integer number (35939242080).

Almost surely, 2^{1220100110112} is an apocalyptic number.

1220100110112 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 1220100110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725083619840).

1220100110112 is an abundant number, since it is smaller than the sum of its proper divisors (2230067129568).

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

1220100110112 is a wasteful number, since it uses less digits than its factorization.

1220100110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294266 (or 294258 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220100110112 its reverse (2110110010221), we get a palindrome (3330210120333).

The spelling of 1220100110112 in words is "one trillion, two hundred twenty billion, one hundred million, one hundred ten thousand, one hundred twelve".