1222270560 has 384 divisors, whose sum is σ = 4959360000. Its totient is φ = 278816256.

The previous prime is 1222270549. The next prime is 1222270561. The reversal of 1222270560 is 650722221.

1222270560 is a `hidden beast` number, since 12 + 2 + 22 + 70 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222270561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2449191 + ... + 2449689.

It is an arithmetic number, because the mean of its divisors is an integer number (12915000).

Almost surely, 2^1222270560 is an apocalyptic number.

1222270560 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 1222270560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479680000).

1222270560 is an abundant number, since it is smaller than the sum of its proper divisors (3737089440).

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

1222270560 is an frugal number, since it uses more digits than its factorization.

1222270560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1222270560 is about 34960.9862561113. The cubic root of 1222270560 is about 1069.1922048202.

Adding to 1222270560 its reverse (650722221), we get a palindrome (1872992781).

The spelling of 1222270560 in words is "one billion, two hundred twenty-two million, two hundred seventy thousand, five hundred sixty".