211201210001 has 2 divisors, whose sum is σ = 211201210002. Its totient is φ = 211201210000.

The previous prime is 211201209949. The next prime is 211201210019. The reversal of 211201210001 is 100012102112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211026309376 + 174900625 = 459376^2 + 13225^2 .

It is a cyclic number.

It is not a de Polignac number, because 211201210001 - 2²² = 211197015697 is a prime.

It is a super-2 number, since 2×211201210001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211201210601) 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, 105600605000 + 105600605001.

It is an arithmetic number, because the mean of its divisors is an integer number (105600605001).

Almost surely, 2^211201210001 is an apocalyptic number.

It is an amenable number.

211201210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201210001 is an equidigital number, since it uses as much as digits as its factorization.

211201210001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211201210001 its reverse (100012102112), we get a palindrome (311213312113).

The spelling of 211201210001 in words is "two hundred eleven billion, two hundred one million, two hundred ten thousand, one".