1222140308 has 12 divisors (see below), whose sum is σ = 2140928160. Its totient is φ = 610446552.

The previous prime is 1222140289. The next prime is 1222140317. The reversal of 1222140308 is 8030412221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151478 + ... + 159341.

It is an arithmetic number, because the mean of its divisors is an integer number (178410680).

Almost surely, 2^1222140308 is an apocalyptic number.

It is an amenable number.

1222140308 is a deficient number, since it is larger than the sum of its proper divisors (918787852).

1222140308 is a wasteful number, since it uses less digits than its factorization.

1222140308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311806 (or 311804 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1222140308 is about 34959.1233871789. The cubic root of 1222140308 is about 1069.1542237668.

Adding to 1222140308 its reverse (8030412221), we get a palindrome (9252552529).

The spelling of 1222140308 in words is "one billion, two hundred twenty-two million, one hundred forty thousand, three hundred eight".