1210122207121 has 2 divisors, whose sum is σ = 1210122207122. Its totient is φ = 1210122207120.

The previous prime is 1210122207079. The next prime is 1210122207127. The reversal of 1210122207121 is 1217022210121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813928752400 + 396193454721 = 902180^2 + 629439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210122207121 - 2¹⁷ = 1210122076049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210122207092 and 1210122207101.

It is not a weakly prime, because it can be changed into another prime (1210122207127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605061103560 + 605061103561.

It is an arithmetic number, because the mean of its divisors is an integer number (605061103561).

Almost surely, 2^{1210122207121} is an apocalyptic number.

It is an amenable number.

1210122207121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210122207121 is an equidigital number, since it uses as much as digits as its factorization.

1210122207121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1210122207121 its reverse (1217022210121), we get a palindrome (2427144417242).

The spelling of 1210122207121 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, two hundred seven thousand, one hundred twenty-one".