1122207240 has 384 divisors, whose sum is σ = 4322223360. Its totient is φ = 228096000.

The previous prime is 1122207239. The next prime is 1122207271. The reversal of 1122207240 is 427022211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6199950 + ... + 6200130.

It is an arithmetic number, because the mean of its divisors is an integer number (11255790).

Almost surely, 2^1122207240 is an apocalyptic number.

1122207240 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 1122207240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2161111680).

1122207240 is an abundant number, since it is smaller than the sum of its proper divisors (3200016120).

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

1122207240 is a wasteful number, since it uses less digits than its factorization.

1122207240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1122207240 is about 33499.3617849654. The cubic root of 1122207240 is about 1039.1805798904.

Adding to 1122207240 its reverse (427022211), we get a palindrome (1549229451).

The spelling of 1122207240 in words is "one billion, one hundred twenty-two million, two hundred seven thousand, two hundred forty".