20212011137 has 2 divisors, whose sum is σ = 20212011138. Its totient is φ = 20212011136.

The previous prime is 20212011041. The next prime is 20212011143. The reversal of 20212011137 is 73111021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15918616561 + 4293394576 = 126169^2 + 65524^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212011137 - 2¹⁴ = 20211994753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212011037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106005568 + 10106005569.

It is an arithmetic number, because the mean of its divisors is an integer number (10106005569).

Almost surely, 2^20212011137 is an apocalyptic number.

It is an amenable number.

20212011137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212011137 is an equidigital number, since it uses as much as digits as its factorization.

20212011137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 20212011137 its reverse (73111021202), we get a palindrome (93323032339).

The spelling of 20212011137 in words is "twenty billion, two hundred twelve million, eleven thousand, one hundred thirty-seven".