1216242522 has 48 divisors (see below), whose sum is σ = 2921911200. Its totient is φ = 362512800.

The previous prime is 1216242493. The next prime is 1216242523. The reversal of 1216242522 is 2252426121.

1216242522 is a `hidden beast` number, since 1 + 216 + 2 + 425 + 22 = 666.

It is not an unprimeable number, because it can be changed into a prime (1216242523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38272 + ... + 62427.

It is an arithmetic number, because the mean of its divisors is an integer number (60873150).

Almost surely, 2^1216242522 is an apocalyptic number.

1216242522 is an abundant number, since it is smaller than the sum of its proper divisors (1705668678).

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

1216242522 is a wasteful number, since it uses less digits than its factorization.

1216242522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100779 (or 100776 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1216242522 is about 34874.6687726206. The cubic root of 1216242522 is about 1067.4316137746.

Adding to 1216242522 its reverse (2252426121), we get a palindrome (3468668643).

The spelling of 1216242522 in words is "one billion, two hundred sixteen million, two hundred forty-two thousand, five hundred twenty-two".