12002121137 has 2 divisors, whose sum is σ = 12002121138. Its totient is φ = 12002121136.

The previous prime is 12002121121. The next prime is 12002121139. The reversal of 12002121137 is 73112120021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11882962081 + 119159056 = 109009^2 + 10916^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002121137 - 2⁴ = 12002121121 is a prime.

Together with 12002121139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12002121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001060568 + 6001060569.

It is an arithmetic number, because the mean of its divisors is an integer number (6001060569).

Almost surely, 2^12002121137 is an apocalyptic number.

It is an amenable number.

12002121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002121137 is an equidigital number, since it uses as much as digits as its factorization.

12002121137 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 20.

Adding to 12002121137 its reverse (73112120021), we get a palindrome (85114241158).

The spelling of 12002121137 in words is "twelve billion, two million, one hundred twenty-one thousand, one hundred thirty-seven".