11212210001 has 2 divisors, whose sum is σ = 11212210002. Its totient is φ = 11212210000.

The previous prime is 11212209997. The next prime is 11212210003. The reversal of 11212210001 is 10001221211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9717227776 + 1494982225 = 98576^2 + 38665^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212210001 - 2² = 11212209997 is a prime.

Together with 11212210003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11212210003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606105000 + 5606105001.

It is an arithmetic number, because the mean of its divisors is an integer number (5606105001).

Almost surely, 2^11212210001 is an apocalyptic number.

It is an amenable number.

11212210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212210001 is an equidigital number, since it uses as much as digits as its factorization.

11212210001 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 11.

Adding to 11212210001 its reverse (10001221211), we get a palindrome (21213431212).

It can be divided in two parts, 1121 and 2210001, that added together give a palindrome (2211122).

The spelling of 11212210001 in words is "eleven billion, two hundred twelve million, two hundred ten thousand, one".