220123412 has 12 divisors (see below), whose sum is σ = 407875860. Its totient is φ = 103587456.

The previous prime is 220123411. The next prime is 220123451. The reversal of 220123412 is 214321022.

It can be written as a sum of positive squares in 2 ways, for example, as 110586256 + 109537156 = 10516^2 + 10466^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123411) 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 3 ways as a sum of consecutive naturals, for example, 1618487 + ... + 1618622.

It is an arithmetic number, because the mean of its divisors is an integer number (33989655).

Almost surely, 2^220123412 is an apocalyptic number.

It is an amenable number.

220123412 is a deficient number, since it is larger than the sum of its proper divisors (187752448).

220123412 is a wasteful number, since it uses less digits than its factorization.

220123412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237130 (or 3237128 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220123412 is about 14836.5566085935. The cubic root of 220123412 is about 603.7939336224.

Adding to 220123412 its reverse (214321022), we get a palindrome (434444434).

The spelling of 220123412 in words is "two hundred twenty million, one hundred twenty-three thousand, four hundred twelve".