122212021211 has 4 divisors (see below), whose sum is σ = 139670881392. Its totient is φ = 104753161032.

The previous prime is 122212021199. The next prime is 122212021297. The reversal of 122212021211 is 112120212221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112120212221 = 1801 ⋅62254421.

It is a cyclic number.

It is not a de Polignac number, because 122212021211 - 2¹⁸ = 122211759067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122212021211.

It is not an unprimeable number, because it can be changed into a prime (122212021411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729430080 + ... + 8729430093.

It is an arithmetic number, because the mean of its divisors is an integer number (34917720348).

Almost surely, 2^122212021211 is an apocalyptic number.

122212021211 is a deficient number, since it is larger than the sum of its proper divisors (17458860181).

122212021211 is an equidigital number, since it uses as much as digits as its factorization.

122212021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17458860180.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122212021211 its reverse (112120212221), we get a palindrome (234332233432).

The spelling of 122212021211 in words is "one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, two hundred eleven".