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122111121211 is a prime number
BaseRepresentation
bin111000110111001100…
…0111101011100111011
3102200012010121200100221
41301232120331130323
54000040421334321
6132032545040511
711552012255512
oct1615630753473
9380163550327
10122111121211
11478725a97a2
121b7ba926137
13b69069a211
145ca5889679
15329a4b7e41
hex1c6e63d73b

122111121211 has 2 divisors, whose sum is σ = 122111121212. Its totient is φ = 122111121210.

The previous prime is 122111121203. The next prime is 122111121217. The reversal of 122111121211 is 112121111221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122111121211 - 23 = 122111121203 is a prime.

It is a super-2 number, since 2×1221111212112 (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122111121217) 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 as a sum of consecutive naturals, namely, 61055560605 + 61055560606.

It is an arithmetic number, because the mean of its divisors is an integer number (61055560606).

Almost surely, 2122111121211 is an apocalyptic number.

122111121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111121211 is an equidigital number, since it uses as much as digits as its factorization.

122111121211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 16.

Adding to 122111121211 its reverse (112121111221), we get a palindrome (234232232432).

The spelling of 122111121211 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred eleven".