213220442112 has 120 divisors (see below), whose sum is σ = 569195819136. Its totient is φ = 70995345408.

The previous prime is 213220442111. The next prime is 213220442143. The reversal of 213220442112 is 211244022312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220442111) 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, 60111123 + ... + 60114669.

Almost surely, 2^213220442112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213220442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284597909568).

213220442112 is an abundant number, since it is smaller than the sum of its proper divisors (355975377024).

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

213220442112 is an equidigital number, since it uses as much as digits as its factorization.

213220442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801 (or 4775 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 213220442112 its reverse (211244022312), we get a palindrome (424464464424).

The spelling of 213220442112 in words is "two hundred thirteen billion, two hundred twenty million, four hundred forty-two thousand, one hundred twelve".