1102211331220 has 96 divisors (see below), whose sum is σ = 2491190704800. Its totient is φ = 408159780864.

The previous prime is 1102211331127. The next prime is 1102211331229. The reversal of 1102211331220 is 221331122011.

It can be written as a sum of positive squares in 16 ways, for example, as 174896258436 + 927315072784 = 418206^2 + 962972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102211331229) 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, 5745816 + ... + 5934544.

It is an arithmetic number, because the mean of its divisors is an integer number (25949903175).

Almost surely, 2^{1102211331220} is an apocalyptic number.

1102211331220 is a gapful number since it is divisible by the number (10) 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 1102211331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245595352400).

1102211331220 is an abundant number, since it is smaller than the sum of its proper divisors (1388979373580).

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

1102211331220 is a wasteful number, since it uses less digits than its factorization.

1102211331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189037 (or 189035 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1102211331220 its reverse (221331122011), we get a palindrome (1323542453231).

It can be divided in two parts, 110221 and 1331220, that added together give a palindrome (1441441).

The spelling of 1102211331220 in words is "one trillion, one hundred two billion, two hundred eleven million, three hundred thirty-one thousand, two hundred twenty".