213223113220 has 96 divisors (see below), whose sum is σ = 503561882880. Its totient is φ = 75248110080.

The previous prime is 213223113211. The next prime is 213223113221. The reversal of 213223113220 is 22311322312.

It is a super-2 number, since 2×213223113220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213223113191 and 213223113200.

It is not an unprimeable number, because it can be changed into a prime (213223113221) 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 31 ways as a sum of consecutive naturals, for example, 8245471 + ... + 8271289.

It is an arithmetic number, because the mean of its divisors is an integer number (5245436280).

Almost surely, 2^213223113220 is an apocalyptic number.

213223113220 is a gapful number since it is divisible by the number (20) 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 213223113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251780941440).

213223113220 is an abundant number, since it is smaller than the sum of its proper divisors (290338769660).

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

213223113220 is a wasteful number, since it uses less digits than its factorization.

213223113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27245 (or 27243 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213223113220 its reverse (22311322312), we get a palindrome (235534435532).

The spelling of 213223113220 in words is "two hundred thirteen billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred twenty".