111000310020121 has 2 divisors, whose sum is σ = 111000310020122. Its totient is φ = 111000310020120.

The previous prime is 111000310020097. The next prime is 111000310020143. The reversal of 111000310020121 is 121020013000111.

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., 66228085668096 + 44772224352025 = 8138064^2 + 6691205^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000310020121 - 2⁴³ = 102204216997913 is a prime.

It is not a weakly prime, because it can be changed into another prime (111000310020191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500155010060 + 55500155010061.

It is an arithmetic number, because the mean of its divisors is an integer number (55500155010061).

Almost surely, 2^{111000310020121} is an apocalyptic number.

It is an amenable number.

111000310020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000310020121 is an equidigital number, since it uses as much as digits as its factorization.

111000310020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111000310020121 its reverse (121020013000111), we get a palindrome (232020323020232).

The spelling of 111000310020121 in words is "one hundred eleven trillion, three hundred ten million, twenty thousand, one hundred twenty-one".