16303462121 has 8 divisors (see below), whose sum is σ = 16953043080. Its totient is φ = 15659707392.

The previous prime is 16303462103. The next prime is 16303462139. The reversal of 16303462121 is 12126430361.

It is an interprime number because it is at equal distance from previous prime (16303462103) and next prime (16303462139).

It can be written as a sum of positive squares in 4 ways, for example, as 2334822400 + 13968639721 = 48320^2 + 118189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16303462121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16303462151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450850 + ... + 1462043.

It is an arithmetic number, because the mean of its divisors is an integer number (2119130385).

Almost surely, 2^16303462121 is an apocalyptic number.

It is an amenable number.

16303462121 is a deficient number, since it is larger than the sum of its proper divisors (649580959).

16303462121 is a wasteful number, since it uses less digits than its factorization.

16303462121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913115.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 16303462121 its reverse (12126430361), we get a palindrome (28429892482).

The spelling of 16303462121 in words is "sixteen billion, three hundred three million, four hundred sixty-two thousand, one hundred twenty-one".