1220012010112 has 96 divisors (see below), whose sum is σ = 2843653156020. Its totient is φ = 519839502336.

The previous prime is 1220012010073. The next prime is 1220012010157. The reversal of 1220012010112 is 2110102100221.

It can be written as a sum of positive squares in 2 ways, for example, as 1044598467136 + 175413542976 = 1022056^2 + 418824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220012010092 and 1220012010101.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522868 + ... + 1647244.

Almost surely, 2^{1220012010112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220012010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421826578010).

1220012010112 is an abundant number, since it is smaller than the sum of its proper divisors (1623641145908).

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

1220012010112 is a wasteful number, since it uses less digits than its factorization.

1220012010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124578 (or 1124559 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220012010112 its reverse (2110102100221), we get a palindrome (3330114110333).

The spelling of 1220012010112 in words is "one trillion, two hundred twenty billion, twelve million, ten thousand, one hundred twelve".