1112001111220 has 12 divisors (see below), whose sum is σ = 2335202333604. Its totient is φ = 444800444480.

The previous prime is 1112001111191. The next prime is 1112001111229. The reversal of 1112001111220 is 221111002111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 796188582436 + 315812528784 = 892294^2 + 561972^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1112001111220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112001111229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27800027761 + ... + 27800027800.

It is an arithmetic number, because the mean of its divisors is an integer number (194600194467).

Almost surely, 2^{1112001111220} is an apocalyptic number.

1112001111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112001111220 is an abundant number, since it is smaller than the sum of its proper divisors (1223201222384).

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

1112001111220 is a wasteful number, since it uses less digits than its factorization.

1112001111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55600055570 (or 55600055568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1112001111220 its reverse (221111002111), we get a palindrome (1333112113331).

It can be divided in two parts, 1112001 and 111220, that added together give a palindrome (1223221).

The spelling of 1112001111220 in words is "one trillion, one hundred twelve billion, one million, one hundred eleven thousand, two hundred twenty".