211606952101 has 2 divisors, whose sum is σ = 211606952102. Its totient is φ = 211606952100.

The previous prime is 211606952069. The next prime is 211606952147. The reversal of 211606952101 is 101259606112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141910424100 + 69696528001 = 376710^2 + 264001^2 .

It is a cyclic number.

It is not a de Polignac number, because 211606952101 - 2⁵ = 211606952069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211606953101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105803476050 + 105803476051.

It is an arithmetic number, because the mean of its divisors is an integer number (105803476051).

Almost surely, 2^211606952101 is an apocalyptic number.

It is an amenable number.

211606952101 is a deficient number, since it is larger than the sum of its proper divisors (1).

211606952101 is an equidigital number, since it uses as much as digits as its factorization.

211606952101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 211606952101 in words is "two hundred eleven billion, six hundred six million, nine hundred fifty-two thousand, one hundred one".