211101220001213 has 2 divisors, whose sum is σ = 211101220001214. Its totient is φ = 211101220001212.

The previous prime is 211101220001197. The next prime is 211101220001233. The reversal of 211101220001213 is 312100022101112.

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., 209984820667609 + 1116399333604 = 14490853^2 + 1056598^2 .

It is a cyclic number.

It is not a de Polignac number, because 211101220001213 - 2⁴ = 211101220001197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211101220001191 and 211101220001200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211101220001233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105550610000606 + 105550610000607.

It is an arithmetic number, because the mean of its divisors is an integer number (105550610000607).

Almost surely, 2^{211101220001213} is an apocalyptic number.

It is an amenable number.

211101220001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211101220001213 is an equidigital number, since it uses as much as digits as its factorization.

211101220001213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 211101220001213 its reverse (312100022101112), we get a palindrome (523201242102325).

The spelling of 211101220001213 in words is "two hundred eleven trillion, one hundred one billion, two hundred twenty million, one thousand, two hundred thirteen".