1216333030 has 16 divisors (see below), whose sum is σ = 2388435984. Its totient is φ = 442302880.

The previous prime is 1216333009. The next prime is 1216333031. The reversal of 1216333030 is 303336121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1216332992 and 1216333010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216333031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5528677 + ... + 5528896.

It is an arithmetic number, because the mean of its divisors is an integer number (149277249).

Almost surely, 2^1216333030 is an apocalyptic number.

1216333030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216333030 is a deficient number, since it is larger than the sum of its proper divisors (1172102954).

1216333030 is a wasteful number, since it uses less digits than its factorization.

1216333030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057591.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 1216333030 is about 34875.9663665396. The cubic root of 1216333030 is about 1067.4580911430.

Adding to 1216333030 its reverse (303336121), we get a palindrome (1519669151).

The spelling of 1216333030 in words is "one billion, two hundred sixteen million, three hundred thirty-three thousand, thirty".