1422321421 has 2 divisors, whose sum is σ = 1422321422. Its totient is φ = 1422321420.

The previous prime is 1422321401. The next prime is 1422321427. The reversal of 1422321421 is 1241232241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1021761225 + 400560196 = 31965^2 + 20014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422321421 - 2¹¹ = 1422319373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1422321392 and 1422321401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422321427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711160710 + 711160711.

It is an arithmetic number, because the mean of its divisors is an integer number (711160711).

Almost surely, 2^1422321421 is an apocalyptic number.

It is an amenable number.

1422321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422321421 is an equidigital number, since it uses as much as digits as its factorization.

1422321421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 1422321421 is about 37713.6768427583. The cubic root of 1422321421 is about 1124.6030325516.

Adding to 1422321421 its reverse (1241232241), we get a palindrome (2663553662).

The spelling of 1422321421 in words is "one billion, four hundred twenty-two million, three hundred twenty-one thousand, four hundred twenty-one".