12211121220009 has 16 divisors (see below), whose sum is σ = 16363920316800. Its totient is φ = 8099537846400.

The previous prime is 12211121219951. The next prime is 12211121220019. The reversal of 12211121220009 is 90002212111221.

It is not a de Polignac number, because 12211121220009 - 2⁷ = 12211121219881 is a prime.

It is a super-2 number, since 2×12211121220009² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211121220019) 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, 16290349 + ... + 17023445.

It is an arithmetic number, because the mean of its divisors is an integer number (1022745019800).

Almost surely, 2^{12211121220009} is an apocalyptic number.

It is an amenable number.

12211121220009 is a deficient number, since it is larger than the sum of its proper divisors (4152799096791).

12211121220009 is a wasteful number, since it uses less digits than its factorization.

12211121220009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761200.

The product of its (nonzero) digits is 288, while the sum is 24.

It can be divided in two parts, 122111212 and 20009, that added together give a palindrome (122131221).

The spelling of 12211121220009 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, nine".