20212220201297 has 2 divisors, whose sum is σ = 20212220201298. Its totient is φ = 20212220201296.

The previous prime is 20212220201207. The next prime is 20212220201317. The reversal of 20212220201297 is 79210202221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13856380877056 + 6355839324241 = 3722416^2 + 2521079^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212220201297 - 2¹⁴ = 20212220184913 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212220201207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106110100648 + 10106110100649.

It is an arithmetic number, because the mean of its divisors is an integer number (10106110100649).

Almost surely, 2^{20212220201297} is an apocalyptic number.

It is an amenable number.

20212220201297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212220201297 is an equidigital number, since it uses as much as digits as its factorization.

20212220201297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 20212220201297 its reverse (79210202221202), we get a palindrome (99422422422499).

The spelling of 20212220201297 in words is "twenty trillion, two hundred twelve billion, two hundred twenty million, two hundred one thousand, two hundred ninety-seven".