16112526221 has 4 divisors (see below), whose sum is σ = 17577301344. Its totient is φ = 14647751100.

The previous prime is 16112526217. The next prime is 16112526239. The reversal of 16112526221 is 12262521161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12262521161 = 11 ⋅1114774651.

It is a cyclic number.

It is not a de Polignac number, because 16112526221 - 2² = 16112526217 is a prime.

It is a super-2 number, since 2×16112526221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16112526821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732387545 + ... + 732387566.

It is an arithmetic number, because the mean of its divisors is an integer number (4394325336).

Almost surely, 2^16112526221 is an apocalyptic number.

16112526221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16112526221 is a deficient number, since it is larger than the sum of its proper divisors (1464775123).

16112526221 is a wasteful number, since it uses less digits than its factorization.

16112526221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464775122.

The product of its digits is 2880, while the sum is 29.

The spelling of 16112526221 in words is "sixteen billion, one hundred twelve million, five hundred twenty-six thousand, two hundred twenty-one".