1220020111112 has 64 divisors (see below), whose sum is σ = 2539168819200. Its totient is φ = 544859656000.

The previous prime is 1220020111069. The next prime is 1220020111117. The reversal of 1220020111112 is 2111110200221.

It is not an unprimeable number, because it can be changed into a prime (1220020111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9651437 + ... + 9777027.

It is an arithmetic number, because the mean of its divisors is an integer number (39674512800).

Almost surely, 2^{1220020111112} 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 1220020111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269584409600).

1220020111112 is an abundant number, since it is smaller than the sum of its proper divisors (1319148708088).

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

1220020111112 is a wasteful number, since it uses less digits than its factorization.

1220020111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127538 (or 127534 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220020111112 its reverse (2111110200221), we get a palindrome (3331130311333).

The spelling of 1220020111112 in words is "one trillion, two hundred twenty billion, twenty million, one hundred eleven thousand, one hundred twelve".