1222242240 has 112 divisors (see below), whose sum is σ = 3887553312. Its totient is φ = 325349376.

The previous prime is 1222242233. The next prime is 1222242253. The reversal of 1222242240 is 422422221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956482 + ... + 957758.

Almost surely, 2^1222242240 is an apocalyptic number.

1222242240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943776656).

1222242240 is an abundant number, since it is smaller than the sum of its proper divisors (2665311072).

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

1222242240 is a wasteful number, since it uses less digits than its factorization.

1222242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2284 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1222242240 is about 34960.5812308663. The cubic root of 1222242240 is about 1069.1839470312.

Adding to 1222242240 its reverse (422422221), we get a palindrome (1644664461).

The spelling of 1222242240 in words is "one billion, two hundred twenty-two million, two hundred forty-two thousand, two hundred forty".