1423332221 has 2 divisors, whose sum is σ = 1423332222. Its totient is φ = 1423332220.

The previous prime is 1423332203. The next prime is 1423332329. The reversal of 1423332221 is 1222333241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727111225 + 696220996 = 26965^2 + 26386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423332221 - 2²⁶ = 1356223357 is a prime.

It is a super-2 number, since 2×1423332221² = 4051749222673585682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423334221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711666110 + 711666111.

It is an arithmetic number, because the mean of its divisors is an integer number (711666111).

Almost surely, 2^1423332221 is an apocalyptic number.

It is an amenable number.

1423332221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423332221 is an equidigital number, since it uses as much as digits as its factorization.

1423332221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 1423332221 is about 37727.0754366145. The cubic root of 1423332221 is about 1124.8693763730.

Adding to 1423332221 its reverse (1222333241), we get a palindrome (2645665462).

The spelling of 1423332221 in words is "one billion, four hundred twenty-three million, three hundred thirty-two thousand, two hundred twenty-one".