16033802121 has 8 divisors (see below), whose sum is σ = 23753780960. Its totient is φ = 10689201396.

The previous prime is 16033802119. The next prime is 16033802149. The reversal of 16033802121 is 12120833061.

It is a happy number.

16033802121 is a `hidden beast` number, since 1 + 603 + 38 + 0 + 2 + 1 + 21 = 666.

It is not a de Polignac number, because 16033802121 - 2¹ = 16033802119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 593844523 = 16033802121 / (1 + 6 + 0 + 3 + 3 + 8 + 0 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16033802171) 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, 296922235 + ... + 296922288.

It is an arithmetic number, because the mean of its divisors is an integer number (2969222620).

Almost surely, 2^16033802121 is an apocalyptic number.

It is an amenable number.

16033802121 is a deficient number, since it is larger than the sum of its proper divisors (7719978839).

16033802121 is an equidigital number, since it uses as much as digits as its factorization.

16033802121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593844532 (or 593844526 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 16033802121 in words is "sixteen billion, thirty-three million, eight hundred two thousand, one hundred twenty-one".