1224110212121 has 2 divisors, whose sum is σ = 1224110212122. Its totient is φ = 1224110212120.

The previous prime is 1224110212109. The next prime is 1224110212181. The reversal of 1224110212121 is 1212120114221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222716235225 + 1393976896 = 1105765^2 + 37336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224110212121 - 2¹⁰ = 1224110211097 is a prime.

It is a super-2 number, since 2×1224110212121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1224110212093 and 1224110212102.

It is not a weakly prime, because it can be changed into another prime (1224110212181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612055106060 + 612055106061.

It is an arithmetic number, because the mean of its divisors is an integer number (612055106061).

Almost surely, 2^{1224110212121} is an apocalyptic number.

It is an amenable number.

1224110212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224110212121 is an equidigital number, since it uses as much as digits as its factorization.

1224110212121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1224110212121 its reverse (1212120114221), we get a palindrome (2436230326342).

The spelling of 1224110212121 in words is "one trillion, two hundred twenty-four billion, one hundred ten million, two hundred twelve thousand, one hundred twenty-one".