21110211112201 has 2 divisors, whose sum is σ = 21110211112202. Its totient is φ = 21110211112200.

The previous prime is 21110211112189. The next prime is 21110211112213. The reversal of 21110211112201 is 10221111201112.

It is a balanced prime because it is at equal distance from previous prime (21110211112189) and next prime (21110211112213).

It can be written as a sum of positive squares in only one way, i.e., 13735184622201 + 7375026490000 = 3706101^2 + 2715700^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110211112201 - 2¹⁹ = 21110210587913 is a prime.

It is a super-2 number, since 2×21110211112201² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21110211112271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555105556100 + 10555105556101.

It is an arithmetic number, because the mean of its divisors is an integer number (10555105556101).

Almost surely, 2^{21110211112201} is an apocalyptic number.

It is an amenable number.

21110211112201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110211112201 is an equidigital number, since it uses as much as digits as its factorization.

21110211112201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 21110211112201 its reverse (10221111201112), we get a palindrome (31331322313313).

The spelling of 21110211112201 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, one hundred twelve thousand, two hundred one".