220124321 has 2 divisors, whose sum is σ = 220124322. Its totient is φ = 220124320.

The previous prime is 220124309. The next prime is 220124351. The reversal of 220124321 is 123421022.

220124321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213160000 + 6964321 = 14600^2 + 2639^2 .

It is a cyclic number.

It is not a de Polignac number, because 220124321 - 2²² = 215930017 is a prime.

It is a super-2 number, since 2×220124321² = 96909433391422082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220124321.

It is not a weakly prime, because it can be changed into another prime (220124351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110062160 + 110062161.

It is an arithmetic number, because the mean of its divisors is an integer number (110062161).

Almost surely, 2^220124321 is an apocalyptic number.

It is an amenable number.

220124321 is a deficient number, since it is larger than the sum of its proper divisors (1).

220124321 is an equidigital number, since it uses as much as digits as its factorization.

220124321 is an evil number, because the sum of its binary digits is even.

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

The square root of 220124321 is about 14836.5872423546. The cubic root of 220124321 is about 603.7947647439.

Adding to 220124321 its reverse (123421022), we get a palindrome (343545343).

The spelling of 220124321 in words is "two hundred twenty million, one hundred twenty-four thousand, three hundred twenty-one".