22011212212211 has 2 divisors, whose sum is σ = 22011212212212. Its totient is φ = 22011212212210.

The previous prime is 22011212212141. The next prime is 22011212212219. The reversal of 22011212212211 is 11221221211022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22011212212211 - 2²⁶ = 22011145103347 is a prime.

It is not a weakly prime, because it can be changed into another prime (22011212212219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005606106105 + 11005606106106.

It is an arithmetic number, because the mean of its divisors is an integer number (11005606106106).

Almost surely, 2^{22011212212211} is an apocalyptic number.

22011212212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011212212211 is an equidigital number, since it uses as much as digits as its factorization.

22011212212211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22011212212211 its reverse (11221221211022), we get a palindrome (33232433423233).

The spelling of 22011212212211 in words is "twenty-two trillion, eleven billion, two hundred twelve million, two hundred twelve thousand, two hundred eleven".