220333145 has 12 divisors (see below), whose sum is σ = 266919660. Its totient is φ = 174602304.

The previous prime is 220333121. The next prime is 220333147. The reversal of 220333145 is 541333022.

It can be written as a sum of positive squares in 6 ways, for example, as 18496 + 220314649 = 136^2 + 14843^2 .

It is not a de Polignac number, because 220333145 - 2²⁴ = 203555929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220333145.

It is not an unprimeable number, because it can be changed into a prime (220333147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57551 + ... + 61259.

It is an arithmetic number, because the mean of its divisors is an integer number (22243305).

Almost surely, 2^220333145 is an apocalyptic number.

It is an amenable number.

220333145 is a deficient number, since it is larger than the sum of its proper divisors (46586515).

220333145 is an equidigital number, since it uses as much as digits as its factorization.

220333145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 220333145 is about 14843.6230415623. The cubic root of 220333145 is about 603.9856371671.

Adding to 220333145 its reverse (541333022), we get a palindrome (761666167).

The spelling of 220333145 in words is "two hundred twenty million, three hundred thirty-three thousand, one hundred forty-five".