220212340 has 24 divisors (see below), whose sum is σ = 464298912. Its totient is φ = 87732000.

The previous prime is 220212323. The next prime is 220212347. The reversal of 220212340 is 43212022.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16914 + ... + 26953.

It is an arithmetic number, because the mean of its divisors is an integer number (19345788).

Almost surely, 2^220212340 is an apocalyptic number.

220212340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220212340 is an abundant number, since it is smaller than the sum of its proper divisors (244086572).

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

220212340 is a wasteful number, since it uses less digits than its factorization.

220212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44127 (or 44125 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220212340 is about 14839.5532277761. The cubic root of 220212340 is about 603.8752318926.

Adding to 220212340 its reverse (43212022), we get a palindrome (263424362).

The spelling of 220212340 in words is "two hundred twenty million, two hundred twelve thousand, three hundred forty".