11221010001211 has 2 divisors, whose sum is σ = 11221010001212. Its totient is φ = 11221010001210.

The previous prime is 11221010001203. The next prime is 11221010001241. The reversal of 11221010001211 is 11210001012211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11221010001211 - 2³ = 11221010001203 is a prime.

It is a super-2 number, since 2×11221010001211² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221010001191 and 11221010001200.

It is not a weakly prime, because it can be changed into another prime (11221010001241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610505000605 + 5610505000606.

It is an arithmetic number, because the mean of its divisors is an integer number (5610505000606).

Almost surely, 2^{11221010001211} is an apocalyptic number.

11221010001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221010001211 is an equidigital number, since it uses as much as digits as its factorization.

11221010001211 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 11221010001211 its reverse (11210001012211), we get a palindrome (22431011013422).

The spelling of 11221010001211 in words is "eleven trillion, two hundred twenty-one billion, ten million, one thousand, two hundred eleven".