12020011221137 has 2 divisors, whose sum is σ = 12020011221138. Its totient is φ = 12020011221136.

The previous prime is 12020011221083. The next prime is 12020011221151. The reversal of 12020011221137 is 73112211002021.

It is a happy number.

12020011221137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11283982778896 + 736028442241 = 3359164^2 + 857921^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020011221137 - 2⁴² = 7621964710033 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020011221187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010005610568 + 6010005610569.

It is an arithmetic number, because the mean of its divisors is an integer number (6010005610569).

Almost surely, 2^{12020011221137} is an apocalyptic number.

It is an amenable number.

12020011221137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020011221137 is an equidigital number, since it uses as much as digits as its factorization.

12020011221137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 12020011221137 its reverse (73112211002021), we get a palindrome (85132222223158).

The spelling of 12020011221137 in words is "twelve trillion, twenty billion, eleven million, two hundred twenty-one thousand, one hundred thirty-seven".