1113212213220 has 192 divisors, whose sum is σ = 3231656580096. Its totient is φ = 286193487360.

The previous prime is 1113212213209. The next prime is 1113212213227. The reversal of 1113212213220 is 223122123111.

It is not an unprimeable number, because it can be changed into a prime (1113212213227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35686030 + ... + 35717210.

It is an arithmetic number, because the mean of its divisors is an integer number (16831544688).

Almost surely, 2^{1113212213220} is an apocalyptic number.

1113212213220 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 1113212213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615828290048).

1113212213220 is an abundant number, since it is smaller than the sum of its proper divisors (2118444366876).

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

1113212213220 is a wasteful number, since it uses less digits than its factorization.

1113212213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31450 (or 31448 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1113212213220 its reverse (223122123111), we get a palindrome (1336334336331).

The spelling of 1113212213220 in words is "one trillion, one hundred thirteen billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty".