12210212302157 has 2 divisors, whose sum is σ = 12210212302158. Its totient is φ = 12210212302156.

The previous prime is 12210212302103. The next prime is 12210212302159. The reversal of 12210212302157 is 75120321201221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11650896782281 + 559315519876 = 3413341^2 + 747874^2 .

It is an emirp because it is prime and its reverse (75120321201221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210212302157 - 2²⁶ = 12210145193293 is a prime.

It is a super-2 number, since 2×12210212302157² (a number of 27 digits) contains 22 as substring.

Together with 12210212302159, 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 (12210212302159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105106151078 + 6105106151079.

It is an arithmetic number, because the mean of its divisors is an integer number (6105106151079).

Almost surely, 2^{12210212302157} is an apocalyptic number.

It is an amenable number.

12210212302157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210212302157 is an equidigital number, since it uses as much as digits as its factorization.

12210212302157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 12210212302157 its reverse (75120321201221), we get a palindrome (87330533503378).

The spelling of 12210212302157 in words is "twelve trillion, two hundred ten billion, two hundred twelve million, three hundred two thousand, one hundred fifty-seven".