1113210020 has 48 divisors (see below), whose sum is σ = 2532222000. Its totient is φ = 408638976.

The previous prime is 1113210017. The next prime is 1113210023. The reversal of 1113210020 is 200123111.

It is an interprime number because it is at equal distance from previous prime (1113210017) and next prime (1113210023).

It can be written as a sum of positive squares in 8 ways, for example, as 99042304 + 1014167716 = 9952^2 + 31846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1113209983 and 1113210010.

It is not an unprimeable number, because it can be changed into a prime (1113210023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32606 + ... + 57354.

It is an arithmetic number, because the mean of its divisors is an integer number (52754625).

Almost surely, 2^1113210020 is an apocalyptic number.

1113210020 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 1113210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266111000).

1113210020 is an abundant number, since it is smaller than the sum of its proper divisors (1419011980).

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

1113210020 is a wasteful number, since it uses less digits than its factorization.

1113210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24944 (or 24942 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1113210020 is about 33364.8021124058. The cubic root of 1113210020 is about 1036.3959382146.

Adding to 1113210020 its reverse (200123111), we get a palindrome (1313333131).

The spelling of 1113210020 in words is "one billion, one hundred thirteen million, two hundred ten thousand, twenty".