211110211002001 has 2 divisors, whose sum is σ = 211110211002002. Its totient is φ = 211110211002000.

The previous prime is 211110211001999. The next prime is 211110211002023. The reversal of 211110211002001 is 100200112011112.

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., 136053095072400 + 75057115929601 = 11664180^2 + 8663551^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110211002001 - 2¹ = 211110211001999 is a prime.

It is a super-3 number, since 3×211110211002001³ (a number of 44 digits) contains 333 as substring.

Together with 211110211001999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211110211003001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555105501000 + 105555105501001.

It is an arithmetic number, because the mean of its divisors is an integer number (105555105501001).

Almost surely, 2^{211110211002001} is an apocalyptic number.

It is an amenable number.

211110211002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110211002001 is an equidigital number, since it uses as much as digits as its factorization.

211110211002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211110211002001 its reverse (100200112011112), we get a palindrome (311310323013113).

The spelling of 211110211002001 in words is "two hundred eleven trillion, one hundred ten billion, two hundred eleven million, two thousand, one".