111022212210121 has 2 divisors, whose sum is σ = 111022212210122. Its totient is φ = 111022212210120.

The previous prime is 111022212210097. The next prime is 111022212210157. The reversal of 111022212210121 is 121012212220111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101421113348025 + 9601098862096 = 10070805^2 + 3098564^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022212210121 - 2⁴¹ = 108823188954569 is a prime.

It is not a weakly prime, because it can be changed into another prime (111022212210181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511106105060 + 55511106105061.

It is an arithmetic number, because the mean of its divisors is an integer number (55511106105061).

Almost surely, 2^{111022212210121} is an apocalyptic number.

It is an amenable number.

111022212210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022212210121 is an equidigital number, since it uses as much as digits as its factorization.

111022212210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111022212210121 its reverse (121012212220111), we get a palindrome (232034424430232).

The spelling of 111022212210121 in words is "one hundred eleven trillion, twenty-two billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-one".