211202100061 has 2 divisors, whose sum is σ = 211202100062. Its totient is φ = 211202100060.

The previous prime is 211202100059. The next prime is 211202100127. The reversal of 211202100061 is 160001202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155744676025 + 55457424036 = 394645^2 + 235494^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202100061 - 2¹ = 211202100059 is a prime.

Together with 211202100059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211202100761) 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, 105601050030 + 105601050031.

It is an arithmetic number, because the mean of its divisors is an integer number (105601050031).

Almost surely, 2^211202100061 is an apocalyptic number.

It is an amenable number.

211202100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202100061 is an equidigital number, since it uses as much as digits as its factorization.

211202100061 is an odious number, because the sum of its binary digits is odd.

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

Adding to 211202100061 its reverse (160001202112), we get a palindrome (371203302173).

The spelling of 211202100061 in words is "two hundred eleven billion, two hundred two million, one hundred thousand, sixty-one".