211210208101 has 2 divisors, whose sum is σ = 211210208102. Its totient is φ = 211210208100.

The previous prime is 211210208081. The next prime is 211210208141. The reversal of 211210208101 is 101802012112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206906716900 + 4303491201 = 454870^2 + 65601^2 .

It is a cyclic number.

It is not a de Polignac number, because 211210208101 - 2⁷ = 211210207973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210208141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605104050 + 105605104051.

It is an arithmetic number, because the mean of its divisors is an integer number (105605104051).

Almost surely, 2^211210208101 is an apocalyptic number.

It is an amenable number.

211210208101 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210208101 is an equidigital number, since it uses as much as digits as its factorization.

211210208101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

The spelling of 211210208101 in words is "two hundred eleven billion, two hundred ten million, two hundred eight thousand, one hundred one".