401224321 has 2 divisors, whose sum is σ = 401224322. Its totient is φ = 401224320.

The previous prime is 401224303. The next prime is 401224339. The reversal of 401224321 is 123422104.

It is a balanced prime because it is at equal distance from previous prime (401224303) and next prime (401224339).

It can be written as a sum of positive squares in only one way, i.e., 333573696 + 67650625 = 18264^2 + 8225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401224321 is a prime.

It is a super-2 number, since 2×401224321² = 321961911523822082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401224381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200612160 + 200612161.

It is an arithmetic number, because the mean of its divisors is an integer number (200612161).

Almost surely, 2^401224321 is an apocalyptic number.

It is an amenable number.

401224321 is a deficient number, since it is larger than the sum of its proper divisors (1).

401224321 is an equidigital number, since it uses as much as digits as its factorization.

401224321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 401224321 is about 20030.5846394957. The cubic root of 401224321 is about 737.5572735756.

Adding to 401224321 its reverse (123422104), we get a palindrome (524646425).

The spelling of 401224321 in words is "four hundred one million, two hundred twenty-four thousand, three hundred twenty-one".