10212020197 has 2 divisors, whose sum is σ = 10212020198. Its totient is φ = 10212020196.

The previous prime is 10212020179. The next prime is 10212020219. The reversal of 10212020197 is 79102021201.

Together with previous prime (10212020179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9138212836 + 1073807361 = 95594^2 + 32769^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212020197 - 2¹¹ = 10212018149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212020167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106010098 + 5106010099.

It is an arithmetic number, because the mean of its divisors is an integer number (5106010099).

Almost surely, 2^10212020197 is an apocalyptic number.

It is an amenable number.

10212020197 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212020197 is an equidigital number, since it uses as much as digits as its factorization.

10212020197 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 25.

Adding to 10212020197 its reverse (79102021201), we get a palindrome (89314041398).

The spelling of 10212020197 in words is "ten billion, two hundred twelve million, twenty thousand, one hundred ninety-seven".