220212342 has 48 divisors (see below), whose sum is σ = 552215040. Its totient is φ = 62118576.

The previous prime is 220212323. The next prime is 220212347. The reversal of 220212342 is 243212022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1108 + ... + 21015.

It is an arithmetic number, because the mean of its divisors is an integer number (11504480).

Almost surely, 2^220212342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220212342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276107520).

220212342 is an abundant number, since it is smaller than the sum of its proper divisors (332002698).

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

220212342 is a wasteful number, since it uses less digits than its factorization.

220212342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22217 (or 22214 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 220212342 is about 14839.5532951636. The cubic root of 220212342 is about 603.8752337208.

Adding to 220212342 its reverse (243212022), we get a palindrome (463424364).

The spelling of 220212342 in words is "two hundred twenty million, two hundred twelve thousand, three hundred forty-two".