11012102100221 has 2 divisors, whose sum is σ = 11012102100222. Its totient is φ = 11012102100220.

The previous prime is 11012102100187. The next prime is 11012102100247. The reversal of 11012102100221 is 12200120121011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6888708883225 + 4123393216996 = 2624635^2 + 2030614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012102100221 - 2¹⁴ = 11012102083837 is a prime.

It is a super-3 number, since 3×11012102100221³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11012102100196 and 11012102100205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012102100421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506051050110 + 5506051050111.

It is an arithmetic number, because the mean of its divisors is an integer number (5506051050111).

Almost surely, 2^{11012102100221} is an apocalyptic number.

It is an amenable number.

11012102100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012102100221 is an equidigital number, since it uses as much as digits as its factorization.

11012102100221 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 14.

Adding to 11012102100221 its reverse (12200120121011), we get a palindrome (23212222221232).

The spelling of 11012102100221 in words is "eleven trillion, twelve billion, one hundred two million, one hundred thousand, two hundred twenty-one".