1220220011112 has 128 divisors (see below), whose sum is σ = 3280418611200. Its totient is φ = 377020009728.

The previous prime is 1220220011099. The next prime is 1220220011113. The reversal of 1220220011112 is 2111100220221.

It is a super-3 number, since 3×1220220011112³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220220011091 and 1220220011100.

It is not an unprimeable number, because it can be changed into a prime (1220220011113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95644638 + ... + 95657394.

It is an arithmetic number, because the mean of its divisors is an integer number (25628270400).

Almost surely, 2^{1220220011112} is an apocalyptic number.

1220220011112 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 1220220011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640209305600).

1220220011112 is an abundant number, since it is smaller than the sum of its proper divisors (2060198600088).

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

1220220011112 is a wasteful number, since it uses less digits than its factorization.

1220220011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17295 (or 17291 counting only the distinct ones).

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

Adding to 1220220011112 its reverse (2111100220221), we get a palindrome (3331320231333).

The spelling of 1220220011112 in words is "one trillion, two hundred twenty billion, two hundred twenty million, eleven thousand, one hundred twelve".