122001011221211 has 2 divisors, whose sum is σ = 122001011221212. Its totient is φ = 122001011221210.

The previous prime is 122001011221181. The next prime is 122001011221273. The reversal of 122001011221211 is 112122110100221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122001011221211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122001011221211.

It is not a weakly prime, because it can be changed into another prime (122001011220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000505610605 + 61000505610606.

It is an arithmetic number, because the mean of its divisors is an integer number (61000505610606).

Almost surely, 2^{122001011221211} is an apocalyptic number.

122001011221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

122001011221211 is an equidigital number, since it uses as much as digits as its factorization.

122001011221211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122001011221211 its reverse (112122110100221), we get a palindrome (234123121321432).

The spelling of 122001011221211 in words is "one hundred twenty-two trillion, one billion, eleven million, two hundred twenty-one thousand, two hundred eleven".