111000102121 has 2 divisors, whose sum is σ = 111000102122. Its totient is φ = 111000102120.

The previous prime is 111000102067. The next prime is 111000102133. The reversal of 111000102121 is 121201000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98493034896 + 12507067225 = 313836^2 + 111835^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000102121 - 2²¹ = 110998004969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111000102098 and 111000102107.

It is not a weakly prime, because it can be changed into another prime (111000106121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500051060 + 55500051061.

It is an arithmetic number, because the mean of its divisors is an integer number (55500051061).

Almost surely, 2^111000102121 is an apocalyptic number.

It is an amenable number.

111000102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000102121 is an equidigital number, since it uses as much as digits as its factorization.

111000102121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111000102121 its reverse (121201000111), we get a palindrome (232201102232).

The spelling of 111000102121 in words is "one hundred eleven billion, one hundred two thousand, one hundred twenty-one".