1200002102137 has 2 divisors, whose sum is σ = 1200002102138. Its totient is φ = 1200002102136.

The previous prime is 1200002102071. The next prime is 1200002102147. The reversal of 1200002102137 is 7312012000021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199103841296 + 898260841 = 1095036^2 + 29971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200002102137 - 2³⁹ = 650246288249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200002102147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600001051068 + 600001051069.

It is an arithmetic number, because the mean of its divisors is an integer number (600001051069).

Almost surely, 2^{1200002102137} is an apocalyptic number.

It is an amenable number.

1200002102137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200002102137 is an equidigital number, since it uses as much as digits as its factorization.

1200002102137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 1200002102137 its reverse (7312012000021), we get a palindrome (8512014102158).

The spelling of 1200002102137 in words is "one trillion, two hundred billion, two million, one hundred two thousand, one hundred thirty-seven".