1321122423 has 8 divisors (see below), whose sum is σ = 1762444528. Its totient is φ = 880274304.

The previous prime is 1321122419. The next prime is 1321122427. The reversal of 1321122423 is 3242211231.

It is an interprime number because it is at equal distance from previous prime (1321122419) and next prime (1321122427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321122423 - 2² = 1321122419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321122423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321122427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111940 + ... + 123177.

It is an arithmetic number, because the mean of its divisors is an integer number (220305566).

Almost surely, 2^1321122423 is an apocalyptic number.

1321122423 is a deficient number, since it is larger than the sum of its proper divisors (441322105).

1321122423 is a wasteful number, since it uses less digits than its factorization.

1321122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236993.

The product of its digits is 576, while the sum is 21.

The square root of 1321122423 is about 36347.2478050264. The cubic root of 1321122423 is about 1097.2721452802.

Adding to 1321122423 its reverse (3242211231), we get a palindrome (4563333654).

The spelling of 1321122423 in words is "one billion, three hundred twenty-one million, one hundred twenty-two thousand, four hundred twenty-three".