1210210202137 has 2 divisors, whose sum is σ = 1210210202138. Its totient is φ = 1210210202136.

The previous prime is 1210210202099. The next prime is 1210210202161. The reversal of 1210210202137 is 7312020120121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047953500416 + 162256701721 = 1023696^2 + 402811^2 .

It is an emirp because it is prime and its reverse (7312020120121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210210202137 - 2⁷ = 1210210202009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210210206137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605105101068 + 605105101069.

It is an arithmetic number, because the mean of its divisors is an integer number (605105101069).

Almost surely, 2^{1210210202137} is an apocalyptic number.

It is an amenable number.

1210210202137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210210202137 is an equidigital number, since it uses as much as digits as its factorization.

1210210202137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 1210210202137 its reverse (7312020120121), we get a palindrome (8522230322258).

The spelling of 1210210202137 in words is "one trillion, two hundred ten billion, two hundred ten million, two hundred two thousand, one hundred thirty-seven".