1220527116 has 60 divisors (see below), whose sum is σ = 3198339760. Its totient is φ = 405868320.

The previous prime is 1220527097. The next prime is 1220527163. The reversal of 1220527116 is 6117250221.

1220527116 is a `hidden beast` number, since 1 + 2 + 20 + 527 + 116 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220527116.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 137946 + ... + 146526.

Almost surely, 2^1220527116 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 1220527116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599169880).

1220527116 is an abundant number, since it is smaller than the sum of its proper divisors (1977812644).

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

1220527116 is a wasteful number, since it uses less digits than its factorization.

1220527116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036 (or 9025 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1220527116 is about 34936.0432218647. The cubic root of 1220527116 is about 1068.6835984600.

Adding to 1220527116 its reverse (6117250221), we get a palindrome (7337777337).

The spelling of 1220527116 in words is "one billion, two hundred twenty million, five hundred twenty-seven thousand, one hundred sixteen".