20042011212397 has 2 divisors, whose sum is σ = 20042011212398. Its totient is φ = 20042011212396.

The previous prime is 20042011212347. The next prime is 20042011212449. The reversal of 20042011212397 is 79321211024002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19452280904676 + 589730307721 = 4410474^2 + 767939^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042011212397 - 2²⁷ = 20041876994669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042011212317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021005606198 + 10021005606199.

It is an arithmetic number, because the mean of its divisors is an integer number (10021005606199).

Almost surely, 2^{20042011212397} is an apocalyptic number.

It is an amenable number.

20042011212397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042011212397 is an equidigital number, since it uses as much as digits as its factorization.

20042011212397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 20042011212397 its reverse (79321211024002), we get a palindrome (99363222236399).

The spelling of 20042011212397 in words is "twenty trillion, forty-two billion, eleven million, two hundred twelve thousand, three hundred ninety-seven".