12211220001211 has 16 divisors (see below), whose sum is σ = 15482418497280. Its totient is φ = 9353961168480.

The previous prime is 12211220001161. The next prime is 12211220001293. The reversal of 12211220001211 is 11210002211221.

It is not a de Polignac number, because 12211220001211 - 2⁹ = 12211220000699 is a prime.

It is a super-2 number, since 2×12211220001211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211220001611) 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, 1343955396 + ... + 1343964481.

It is an arithmetic number, because the mean of its divisors is an integer number (967651156080).

Almost surely, 2^{12211220001211} is an apocalyptic number.

12211220001211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211220001211 is a deficient number, since it is larger than the sum of its proper divisors (3271198496069).

12211220001211 is a wasteful number, since it uses less digits than its factorization.

12211220001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687919954.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211220001211 its reverse (11210002211221), we get a palindrome (23421222212432).

The spelling of 12211220001211 in words is "twelve trillion, two hundred eleven billion, two hundred twenty million, one thousand, two hundred eleven".