1113321221020 has 24 divisors (see below), whose sum is σ = 2352317973264. Its totient is φ = 442596410496.

The previous prime is 1113321221011. The next prime is 1113321221027. The reversal of 1113321221020 is 201221233111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113321221027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170751529 + ... + 170758048.

It is an arithmetic number, because the mean of its divisors is an integer number (98013248886).

Almost surely, 2^{1113321221020} is an apocalyptic number.

1113321221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113321221020 is an abundant number, since it is smaller than the sum of its proper divisors (1238996752244).

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

1113321221020 is a wasteful number, since it uses less digits than its factorization.

1113321221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341509749 (or 341509747 counting only the distinct ones).

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

Adding to 1113321221020 its reverse (201221233111), we get a palindrome (1314542454131).

The spelling of 1113321221020 in words is "one trillion, one hundred thirteen billion, three hundred twenty-one million, two hundred twenty-one thousand, twenty".