1421223379 has 2 divisors, whose sum is σ = 1421223380. Its totient is φ = 1421223378.

The previous prime is 1421223347. The next prime is 1421223413. The reversal of 1421223379 is 9733221241.

It is an a-pointer prime, because the next prime (1421223413) can be obtained adding 1421223379 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (9733221241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421223379 - 2⁵ = 1421223347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421223679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710611689 + 710611690.

It is an arithmetic number, because the mean of its divisors is an integer number (710611690).

Almost surely, 2^1421223379 is an apocalyptic number.

1421223379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421223379 is an equidigital number, since it uses as much as digits as its factorization.

1421223379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 1421223379 is about 37699.1164220065. The cubic root of 1421223379 is about 1124.3135576001.

The spelling of 1421223379 in words is "one billion, four hundred twenty-one million, two hundred twenty-three thousand, three hundred seventy-nine".