1243222422 has 64 divisors (see below), whose sum is σ = 2779057344. Its totient is φ = 368271360.

The previous prime is 1243222403. The next prime is 1243222439. The reversal of 1243222422 is 2242223421.

It is a junction number, because it is equal to n+sod(n) for n = 1243222392 and 1243222401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277722 + ... + 282162.

It is an arithmetic number, because the mean of its divisors is an integer number (43422771).

Almost surely, 2^1243222422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243222422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389528672).

1243222422 is an abundant number, since it is smaller than the sum of its proper divisors (1535834922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243222422 is a wasteful number, since it uses less digits than its factorization.

1243222422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593.

The product of its digits is 3072, while the sum is 24.

The square root of 1243222422 is about 35259.3593532271. The cubic root of 1243222422 is about 1075.2669023954.

Adding to 1243222422 its reverse (2242223421), we get a palindrome (3485445843).

Subtracting 1243222422 from its reverse (2242223421), we obtain a palindrome (999000999).

The spelling of 1243222422 in words is "one billion, two hundred forty-three million, two hundred twenty-two thousand, four hundred twenty-two".