421222433 has 2 divisors, whose sum is σ = 421222434. Its totient is φ = 421222432.

The previous prime is 421222369. The next prime is 421222469. The reversal of 421222433 is 334222124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253701184 + 167521249 = 15928^2 + 12943^2 .

It is a cyclic number.

It is not a de Polignac number, because 421222433 - 2⁶ = 421222369 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421222399 and 421222408.

It is not a weakly prime, because it can be changed into another prime (421222133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210611216 + 210611217.

It is an arithmetic number, because the mean of its divisors is an integer number (210611217).

Almost surely, 2^421222433 is an apocalyptic number.

It is an amenable number.

421222433 is a deficient number, since it is larger than the sum of its proper divisors (1).

421222433 is an equidigital number, since it uses as much as digits as its factorization.

421222433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 23.

The square root of 421222433 is about 20523.7041734673. The cubic root of 421222433 is about 749.6130940690.

Adding to 421222433 its reverse (334222124), we get a palindrome (755444557).

The spelling of 421222433 in words is "four hundred twenty-one million, two hundred twenty-two thousand, four hundred thirty-three".