1113123120220 has 48 divisors (see below), whose sum is σ = 2468500070400. Its totient is φ = 420458713920.

The previous prime is 1113123120211. The next prime is 1113123120247. The reversal of 1113123120220 is 220213213111.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4591260 + ... + 4827619.

It is an arithmetic number, because the mean of its divisors is an integer number (51427084800).

Almost surely, 2^{1113123120220} is an apocalyptic number.

1113123120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113123120220 is an abundant number, since it is smaller than the sum of its proper divisors (1355376950180).

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

1113123120220 is a wasteful number, since it uses less digits than its factorization.

1113123120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419218 (or 9419216 counting only the distinct ones).

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

Adding to 1113123120220 its reverse (220213213111), we get a palindrome (1333336333331).

The spelling of 1113123120220 in words is "one trillion, one hundred thirteen billion, one hundred twenty-three million, one hundred twenty thousand, two hundred twenty".