121111022113 has 2 divisors, whose sum is σ = 121111022114. Its totient is φ = 121111022112.

The previous prime is 121111021979. The next prime is 121111022117. The reversal of 121111022113 is 311220111121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74740998544 + 46370023569 = 273388^2 + 215337^2 .

It is a cyclic number.

It is not a de Polignac number, because 121111022113 - 2¹³ = 121111013921 is a prime.

It is not a weakly prime, because it can be changed into another prime (121111022117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555511056 + 60555511057.

It is an arithmetic number, because the mean of its divisors is an integer number (60555511057).

Almost surely, 2^121111022113 is an apocalyptic number.

It is an amenable number.

121111022113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111022113 is an equidigital number, since it uses as much as digits as its factorization.

121111022113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121111022113 its reverse (311220111121), we get a palindrome (432331133234).

The spelling of 121111022113 in words is "one hundred twenty-one billion, one hundred eleven million, twenty-two thousand, one hundred thirteen".