1321122422 has 4 divisors (see below), whose sum is σ = 1981683636. Its totient is φ = 660561210.

The previous prime is 1321122419. The next prime is 1321122427. The reversal of 1321122422 is 2242211231.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1321122422² = 3490728907822292168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321122394 and 1321122403.

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 as a sum of consecutive naturals, namely, 330280604 + ... + 330280607.

It is an arithmetic number, because the mean of its divisors is an integer number (495420909).

Almost surely, 2^1321122422 is an apocalyptic number.

1321122422 is a deficient number, since it is larger than the sum of its proper divisors (660561214).

1321122422 is an equidigital number, since it uses as much as digits as its factorization.

1321122422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660561213.

The product of its digits is 384, while the sum is 20.

The square root of 1321122422 is about 36347.2477912702. The cubic root of 1321122422 is about 1097.2721450033.

Adding to 1321122422 its reverse (2242211231), we get a palindrome (3563333653).

The spelling of 1321122422 in words is "one billion, three hundred twenty-one million, one hundred twenty-two thousand, four hundred twenty-two".