16326111021 has 8 divisors (see below), whose sum is σ = 23747070624. Its totient is φ = 9894612720.

The previous prime is 16326110923. The next prime is 16326111029. The reversal of 16326111021 is 12011162361.

It is a happy number.

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

It is not a de Polignac number, because 16326111021 - 2¹⁵ = 16326078253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16326110982 and 16326111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16326111029) 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, 247365286 + ... + 247365351.

It is an arithmetic number, because the mean of its divisors is an integer number (2968383828).

Almost surely, 2^16326111021 is an apocalyptic number.

16326111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16326111021 is a deficient number, since it is larger than the sum of its proper divisors (7420959603).

16326111021 is a wasteful number, since it uses less digits than its factorization.

16326111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494730651.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 16326111021 its reverse (12011162361), we get a palindrome (28337273382).

The spelling of 16326111021 in words is "sixteen billion, three hundred twenty-six million, one hundred eleven thousand, twenty-one".