12212100505 has 16 divisors (see below), whose sum is σ = 15997593600. Its totient is φ = 8875503360.

The previous prime is 12212100499. The next prime is 12212100517. The reversal of 12212100505 is 50500121221.

It is not a de Polignac number, because 12212100505 - 2³ = 12212100497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7336 + ... + 156454.

It is an arithmetic number, because the mean of its divisors is an integer number (999849600).

Almost surely, 2^12212100505 is an apocalyptic number.

It is an amenable number.

12212100505 is a deficient number, since it is larger than the sum of its proper divisors (3785493095).

12212100505 is a wasteful number, since it uses less digits than its factorization.

12212100505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150624.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 12212100505 its reverse (50500121221), we get a palindrome (62712221726).

The spelling of 12212100505 in words is "twelve billion, two hundred twelve million, one hundred thousand, five hundred five".