16263121 has 8 divisors (see below), whose sum is σ = 18771264. Its totient is φ = 13801200.

The previous prime is 16263119. The next prime is 16263151. The reversal of 16263121 is 12136261.

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

It is not a de Polignac number, because 16263121 - 2¹ = 16263119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16263092 and 16263101.

It is not an unprimeable number, because it can be changed into a prime (16263151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10795 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (2346408).

Almost surely, 2^16263121 is an apocalyptic number.

It is an amenable number.

16263121 is a deficient number, since it is larger than the sum of its proper divisors (2508143).

16263121 is a wasteful number, since it uses less digits than its factorization.

16263121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23111.

The product of its digits is 432, while the sum is 22.

The square root of 16263121 is about 4032.7560055129. The cubic root of 16263121 is about 253.3580052533.

Adding to 16263121 its reverse (12136261), we get a palindrome (28399382).

It can be divided in two parts, 16263 and 121, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 16263121 in words is "sixteen million, two hundred sixty-three thousand, one hundred twenty-one".