101212120213 has 2 divisors, whose sum is σ = 101212120214. Its totient is φ = 101212120212.

The previous prime is 101212120169. The next prime is 101212120231. The reversal of 101212120213 is 312021212101.

Together with next prime (101212120231) 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., 92183889924 + 9028230289 = 303618^2 + 95017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212120213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101212120613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606060106 + 50606060107.

It is an arithmetic number, because the mean of its divisors is an integer number (50606060107).

Almost surely, 2^101212120213 is an apocalyptic number.

It is an amenable number.

101212120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212120213 is an equidigital number, since it uses as much as digits as its factorization.

101212120213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 101212120213 its reverse (312021212101), we get a palindrome (413233332314).

The spelling of 101212120213 in words is "one hundred one billion, two hundred twelve million, one hundred twenty thousand, two hundred thirteen".