110111001210121 has 2 divisors, whose sum is σ = 110111001210122. Its totient is φ = 110111001210120.

The previous prime is 110111001210071. The next prime is 110111001210127. The reversal of 110111001210121 is 121012100111011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89207817210121 + 20903184000000 = 9444989^2 + 4572000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110111001210121 is a prime.

It is not a weakly prime, because it can be changed into another prime (110111001210127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055500605060 + 55055500605061.

It is an arithmetic number, because the mean of its divisors is an integer number (55055500605061).

Almost surely, 2^{110111001210121} is an apocalyptic number.

It is an amenable number.

110111001210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111001210121 is an equidigital number, since it uses as much as digits as its factorization.

110111001210121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110111001210121 its reverse (121012100111011), we get a palindrome (231123101321132).

The spelling of 110111001210121 in words is "one hundred ten trillion, one hundred eleven billion, one million, two hundred ten thousand, one hundred twenty-one".