1210102122121 has 2 divisors, whose sum is σ = 1210102122122. Its totient is φ = 1210102122120.

The previous prime is 1210102122091. The next prime is 1210102122139. The reversal of 1210102122121 is 1212212010121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1209639226896 + 462895225 = 1099836^2 + 21515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210102122121 - 2⁷ = 1210102121993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210102122095 and 1210102122104.

It is not a weakly prime, because it can be changed into another prime (1210102122521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605051061060 + 605051061061.

It is an arithmetic number, because the mean of its divisors is an integer number (605051061061).

Almost surely, 2^{1210102122121} is an apocalyptic number.

It is an amenable number.

1210102122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210102122121 is an equidigital number, since it uses as much as digits as its factorization.

1210102122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1210102122121 its reverse (1212212010121), we get a palindrome (2422314132242).

The spelling of 1210102122121 in words is "one trillion, two hundred ten billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".