16512101211 has 4 divisors (see below), whose sum is σ = 22016134952. Its totient is φ = 11008067472.

The previous prime is 16512101201. The next prime is 16512101213. The reversal of 16512101211 is 11210121561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11210121561 = 3 ⋅3736707187.

It is not a de Polignac number, because 16512101211 - 2²¹ = 16510004059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16512101213) 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 3 ways as a sum of consecutive naturals, for example, 2752016866 + ... + 2752016871.

It is an arithmetic number, because the mean of its divisors is an integer number (5504033738).

Almost surely, 2^16512101211 is an apocalyptic number.

16512101211 is a deficient number, since it is larger than the sum of its proper divisors (5504033741).

16512101211 is an equidigital number, since it uses as much as digits as its factorization.

16512101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504033740.

The product of its (nonzero) digits is 120, while the sum is 21.

Adding to 16512101211 its reverse (11210121561), we get a palindrome (27722222772).

The spelling of 16512101211 in words is "sixteen billion, five hundred twelve million, one hundred one thousand, two hundred eleven".