11212021207 has 2 divisors, whose sum is σ = 11212021208. Its totient is φ = 11212021206.

The previous prime is 11212021189. The next prime is 11212021213. The reversal of 11212021207 is 70212021211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212021207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212021217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606010603 + 5606010604.

It is an arithmetic number, because the mean of its divisors is an integer number (5606010604).

Almost surely, 2^11212021207 is an apocalyptic number.

11212021207 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212021207 is an equidigital number, since it uses as much as digits as its factorization.

11212021207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 11212021207 its reverse (70212021211), we get a palindrome (81424042418).

The spelling of 11212021207 in words is "eleven billion, two hundred twelve million, twenty-one thousand, two hundred seven".