20212097 has 2 divisors, whose sum is σ = 20212098. Its totient is φ = 20212096.

The previous prime is 20212079. The next prime is 20212103. The reversal of 20212097 is 79021202.

Together with previous prime (20212079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 6677056 = 3679^2 + 2584^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212097 - 2⁶ = 20212033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20212597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106048 + 10106049.

It is an arithmetic number, because the mean of its divisors is an integer number (10106049).

Almost surely, 2^20212097 is an apocalyptic number.

It is an amenable number.

20212097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212097 is an equidigital number, since it uses as much as digits as its factorization.

20212097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20212097 is about 4495.7865830130. The cubic root of 20212097 is about 272.3979226570.

Adding to 20212097 its reverse (79021202), we get a palindrome (99233299).

The spelling of 20212097 in words is "twenty million, two hundred twelve thousand, ninety-seven".