122220111011231 has 2 divisors, whose sum is σ = 122220111011232. Its totient is φ = 122220111011230.

The previous prime is 122220111011191. The next prime is 122220111011233. The reversal of 122220111011231 is 132110111022221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122220111011231 is a prime.

It is a super-2 number, since 2×122220111011231² (a number of 29 digits) contains 22 as substring.

Together with 122220111011233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220111011233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110055505615 + 61110055505616.

It is an arithmetic number, because the mean of its divisors is an integer number (61110055505616).

Almost surely, 2^{122220111011231} is an apocalyptic number.

122220111011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220111011231 is an equidigital number, since it uses as much as digits as its factorization.

122220111011231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 122220111011231 its reverse (132110111022221), we get a palindrome (254330222033452).

The spelling of 122220111011231 in words is "one hundred twenty-two trillion, two hundred twenty billion, one hundred eleven million, eleven thousand, two hundred thirty-one".