1422443021 has 2 divisors, whose sum is σ = 1422443022. Its totient is φ = 1422443020.

The previous prime is 1422442993. The next prime is 1422443047. The reversal of 1422443021 is 1203442241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1177176100 + 245266921 = 34310^2 + 15661^2 .

It is an emirp because it is prime and its reverse (1203442241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1422443021 - 2¹⁰ = 1422441997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422443221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711221510 + 711221511.

It is an arithmetic number, because the mean of its divisors is an integer number (711221511).

Almost surely, 2^1422443021 is an apocalyptic number.

It is an amenable number.

1422443021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422443021 is an equidigital number, since it uses as much as digits as its factorization.

1422443021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1422443021 is about 37715.2889555416. The cubic root of 1422443021 is about 1124.6350805894.

Adding to 1422443021 its reverse (1203442241), we get a palindrome (2625885262).

The spelling of 1422443021 in words is "one billion, four hundred twenty-two million, four hundred forty-three thousand, twenty-one".