212010030101 has 2 divisors, whose sum is σ = 212010030102.
Its totient is φ = 212010030100.
The previous prime is 212010030079. The next prime is 212010030137. The reversal of 212010030101 is 101030010212.
Adding to 212010030101 its reverse (101030010212), we get a palindrome (313040040313).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 168276346225 + 43733683876 = 410215^2 + 209126^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-212010030101 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212010030151) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005015050 + 106005015051.
It is an arithmetic number, because the mean of its divisors is an integer number (106005015051).
Almost surely, 2212010030101 is an apocalyptic number.
It is an amenable number.
212010030101 is a deficient number, since it is larger than the sum of its proper divisors (1).
212010030101 is an equidigital number, since it uses as much as digits as its factorization.
212010030101 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 12, while the sum is 11.
The spelling of 212010030101 in words is "two hundred twelve billion, ten million, thirty thousand, one hundred one".