1212562652137 has 2 divisors, whose sum is σ = 1212562652138. Its totient is φ = 1212562652136.

The previous prime is 1212562652101. The next prime is 1212562652179. The reversal of 1212562652137 is 7312562652121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907620141481 + 304942510656 = 952691^2 + 552216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212562652137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212562652093 and 1212562652102.

It is not a weakly prime, because it can be changed into another prime (1212562652237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606281326068 + 606281326069.

It is an arithmetic number, because the mean of its divisors is an integer number (606281326069).

Almost surely, 2^{1212562652137} is an apocalyptic number.

It is an amenable number.

1212562652137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212562652137 is an equidigital number, since it uses as much as digits as its factorization.

1212562652137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The spelling of 1212562652137 in words is "one trillion, two hundred twelve billion, five hundred sixty-two million, six hundred fifty-two thousand, one hundred thirty-seven".