211001201231 has 2 divisors, whose sum is σ = 211001201232. Its totient is φ = 211001201230.

The previous prime is 211001201209. The next prime is 211001201251. The reversal of 211001201231 is 132102100112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211001201231 is a prime.

It is a super-2 number, since 2×211001201231² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211001201251) 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, 105500600615 + 105500600616.

It is an arithmetic number, because the mean of its divisors is an integer number (105500600616).

Almost surely, 2^211001201231 is an apocalyptic number.

211001201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001201231 is an equidigital number, since it uses as much as digits as its factorization.

211001201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211001201231 its reverse (132102100112), we get a palindrome (343103301343).

The spelling of 211001201231 in words is "two hundred eleven billion, one million, two hundred one thousand, two hundred thirty-one".