122111323231211 has 2 divisors, whose sum is σ = 122111323231212. Its totient is φ = 122111323231210.

The previous prime is 122111323231193. The next prime is 122111323231267. The reversal of 122111323231211 is 112132323111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122111323231211 - 2²² = 122111319036907 is a prime.

It is a super-2 number, since 2×122111323231211² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (122111323201211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055661615605 + 61055661615606.

It is an arithmetic number, because the mean of its divisors is an integer number (61055661615606).

Almost surely, 2^{122111323231211} is an apocalyptic number.

122111323231211 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111323231211 is an equidigital number, since it uses as much as digits as its factorization.

122111323231211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

Adding to 122111323231211 its reverse (112132323111221), we get a palindrome (234243646342432).

The spelling of 122111323231211 in words is "one hundred twenty-two trillion, one hundred eleven billion, three hundred twenty-three million, two hundred thirty-one thousand, two hundred eleven".