13212511005 has 16 divisors (see below), whose sum is σ = 21146719104. Its totient is φ = 7044438720.

The previous prime is 13212510979. The next prime is 13212511009. The reversal of 13212511005 is 50011521231.

It is not a de Polignac number, because 13212511005 - 2¹⁷ = 13212379933 is a prime.

It is a super-2 number, since 2×13212511005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212511009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90154 + ... + 185883.

It is an arithmetic number, because the mean of its divisors is an integer number (1321669944).

Almost surely, 2^13212511005 is an apocalyptic number.

13212511005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13212511005 is a deficient number, since it is larger than the sum of its proper divisors (7934208099).

13212511005 is a wasteful number, since it uses less digits than its factorization.

13212511005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279236.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 13212511005 in words is "thirteen billion, two hundred twelve million, five hundred eleven thousand, five".