12121000210157 has 2 divisors, whose sum is σ = 12121000210158. Its totient is φ = 12121000210156.

The previous prime is 12121000210073. The next prime is 12121000210159. The reversal of 12121000210157 is 75101200012121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10930819580041 + 1190180630116 = 3306179^2 + 1090954^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121000210157 - 2¹⁶ = 12121000144621 is a prime.

Together with 12121000210159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121000210159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060500105078 + 6060500105079.

It is an arithmetic number, because the mean of its divisors is an integer number (6060500105079).

Almost surely, 2^{12121000210157} is an apocalyptic number.

It is an amenable number.

12121000210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121000210157 is an equidigital number, since it uses as much as digits as its factorization.

12121000210157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 12121000210157 its reverse (75101200012121), we get a palindrome (87222200222278).

The spelling of 12121000210157 in words is "twelve trillion, one hundred twenty-one billion, two hundred ten thousand, one hundred fifty-seven".