422433330421 has 2 divisors, whose sum is σ = 422433330422. Its totient is φ = 422433330420.

The previous prime is 422433330383. The next prime is 422433330493. The reversal of 422433330421 is 124033334224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313500327921 + 108933002500 = 559911^2 + 330050^2 .

It is a cyclic number.

It is not a de Polignac number, because 422433330421 - 2²⁵ = 422399775989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422433330821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211216665210 + 211216665211.

It is an arithmetic number, because the mean of its divisors is an integer number (211216665211).

Almost surely, 2^422433330421 is an apocalyptic number.

It is an amenable number.

422433330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

422433330421 is an equidigital number, since it uses as much as digits as its factorization.

422433330421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 422433330421 its reverse (124033334224), we get a palindrome (546466664645).

The spelling of 422433330421 in words is "four hundred twenty-two billion, four hundred thirty-three million, three hundred thirty thousand, four hundred twenty-one".