12211220202209 has 16 divisors (see below), whose sum is σ = 13968763106688. Its totient is φ = 10456952618112.

The previous prime is 12211220202199. The next prime is 12211220202229. The reversal of 12211220202209 is 90220202211221.

It is not a de Polignac number, because 12211220202209 - 2³² = 12206925234913 is a prime.

It is a super-2 number, since 2×12211220202209² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211220202229) 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, 32016659 + ... + 32395815.

It is an arithmetic number, because the mean of its divisors is an integer number (873047694168).

Almost surely, 2^{12211220202209} is an apocalyptic number.

It is an amenable number.

12211220202209 is a deficient number, since it is larger than the sum of its proper divisors (1757542904479).

12211220202209 is a wasteful number, since it uses less digits than its factorization.

12211220202209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383464.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 12211220202209 in words is "twelve trillion, two hundred eleven billion, two hundred twenty million, two hundred two thousand, two hundred nine".