212210100997 has 2 divisors, whose sum is σ = 212210100998. Its totient is φ = 212210100996.

The previous prime is 212210100929. The next prime is 212210101001. The reversal of 212210100997 is 799001012212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205072216801 + 7137884196 = 452849^2 + 84486^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210100997 - 2¹⁵ = 212210068229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212210100197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105050498 + 106105050499.

It is an arithmetic number, because the mean of its divisors is an integer number (106105050499).

Almost surely, 2^212210100997 is an apocalyptic number.

It is an amenable number.

212210100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210100997 is an equidigital number, since it uses as much as digits as its factorization.

212210100997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 212210100997 in words is "two hundred twelve billion, two hundred ten million, one hundred thousand, nine hundred ninety-seven".