1311222422 has 8 divisors (see below), whose sum is σ = 1982320896. Its totient is φ = 650448792.

The previous prime is 1311222421. The next prime is 1311222439. The reversal of 1311222422 is 2242221131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1311222394 and 1311222403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311222421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580893 + ... + 2581400.

It is an arithmetic number, because the mean of its divisors is an integer number (247790112).

Almost surely, 2^1311222422 is an apocalyptic number.

1311222422 is a deficient number, since it is larger than the sum of its proper divisors (671098474).

1311222422 is a wasteful number, since it uses less digits than its factorization.

1311222422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162422.

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

The square root of 1311222422 is about 36210.8053210640. The cubic root of 1311222422 is about 1094.5244202913.

Adding to 1311222422 its reverse (2242221131), we get a palindrome (3553443553).

The spelling of 1311222422 in words is "one billion, three hundred eleven million, two hundred twenty-two thousand, four hundred twenty-two".