1216230052 has 24 divisors (see below), whose sum is σ = 2261377440. Its totient is φ = 570720960.

The previous prime is 1216230019. The next prime is 1216230053. The reversal of 1216230052 is 2500326121.

It is not an unprimeable number, because it can be changed into a prime (1216230053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66649 + ... + 82912.

It is an arithmetic number, because the mean of its divisors is an integer number (94224060).

Almost surely, 2^1216230052 is an apocalyptic number.

It is an amenable number.

1216230052 is a deficient number, since it is larger than the sum of its proper divisors (1045147388).

1216230052 is a wasteful number, since it uses less digits than its factorization.

1216230052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149691 (or 149689 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1216230052 is about 34874.4899891023. The cubic root of 1216230052 is about 1067.4279656760.

Adding to 1216230052 its reverse (2500326121), we get a palindrome (3716556173).

The spelling of 1216230052 in words is "one billion, two hundred sixteen million, two hundred thirty thousand, fifty-two".