121112222101243 has 2 divisors, whose sum is σ = 121112222101244. Its totient is φ = 121112222101242.

The previous prime is 121112222101217. The next prime is 121112222101261. The reversal of 121112222101243 is 342101222211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121112222101243 - 2⁹ = 121112222100731 is a prime.

It is not a weakly prime, because it can be changed into another prime (121112222108243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556111050621 + 60556111050622.

It is an arithmetic number, because the mean of its divisors is an integer number (60556111050622).

Almost surely, 2^{121112222101243} is an apocalyptic number.

121112222101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112222101243 is an equidigital number, since it uses as much as digits as its factorization.

121112222101243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 121112222101243 its reverse (342101222211121), we get a palindrome (463213444312364).

The spelling of 121112222101243 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred one thousand, two hundred forty-three".