16266111211021 has 8 divisors (see below), whose sum is σ = 19043252149824. Its totient is φ = 13602322963680.

The previous prime is 16266111211003. The next prime is 16266111211039. The reversal of 16266111211021 is 12011211166261.

It is an interprime number because it is at equal distance from previous prime (16266111211003) and next prime (16266111211039).

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-16266111211021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16266111211421) 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, 28338172555 + ... + 28338173128.

It is an arithmetic number, because the mean of its divisors is an integer number (2380406518728).

Almost surely, 2^{16266111211021} is an apocalyptic number.

It is an amenable number.

16266111211021 is a deficient number, since it is larger than the sum of its proper divisors (2777140938803).

16266111211021 is an equidigital number, since it uses as much as digits as its factorization.

16266111211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56676345731.

The product of its (nonzero) digits is 1728, while the sum is 31.

Adding to 16266111211021 its reverse (12011211166261), we get a palindrome (28277322377282).

The spelling of 16266111211021 in words is "sixteen trillion, two hundred sixty-six billion, one hundred eleven million, two hundred eleven thousand, twenty-one".