1222540608 has 112 divisors (see below), whose sum is σ = 3289954304. Its totient is φ = 400619520.

The previous prime is 1222540607. The next prime is 1222540609. The reversal of 1222540608 is 8060452221.

It is an interprime number because it is at equal distance from previous prime (1222540607) and next prime (1222540609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222540603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4413366 + ... + 4413642.

It is an arithmetic number, because the mean of its divisors is an integer number (29374592).

Almost surely, 2^1222540608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222540608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644977152).

1222540608 is an abundant number, since it is smaller than the sum of its proper divisors (2067413696).

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

1222540608 is a wasteful number, since it uses less digits than its factorization.

1222540608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1222540608 is about 34964.8481764186. The cubic root of 1222540608 is about 1069.2709413303.

Adding to 1222540608 its reverse (8060452221), we get a palindrome (9282992829).

The spelling of 1222540608 in words is "one billion, two hundred twenty-two million, five hundred forty thousand, six hundred eight".