113211020 has 24 divisors (see below), whose sum is σ = 256031664. Its totient is φ = 41800896.

The previous prime is 113211019. The next prime is 113211023. The reversal of 113211020 is 20112311.

It is a junction number, because it is equal to n+sod(n) for n = 113210992 and 113211010.

It is not an unprimeable number, because it can be changed into a prime (113211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217454 + ... + 217973.

It is an arithmetic number, because the mean of its divisors is an integer number (10667986).

Almost surely, 2^113211020 is an apocalyptic number.

113211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113211020 is an abundant number, since it is smaller than the sum of its proper divisors (142820644).

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

113211020 is a wasteful number, since it uses less digits than its factorization.

113211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435449 (or 435447 counting only the distinct ones).

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

The square root of 113211020 is about 10640.0667291141. The cubic root of 113211020 is about 483.7595679902.

Adding to 113211020 its reverse (20112311), we get a palindrome (133323331).

The spelling of 113211020 in words is "one hundred thirteen million, two hundred eleven thousand, twenty".