11220210221251 has 2 divisors, whose sum is σ = 11220210221252. Its totient is φ = 11220210221250.

The previous prime is 11220210221249. The next prime is 11220210221261. The reversal of 11220210221251 is 15212201202211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11220210221251 - 2¹ = 11220210221249 is a prime.

Together with 11220210221249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11220210221261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610105110625 + 5610105110626.

It is an arithmetic number, because the mean of its divisors is an integer number (5610105110626).

Almost surely, 2^{11220210221251} is an apocalyptic number.

11220210221251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220210221251 is an equidigital number, since it uses as much as digits as its factorization.

11220210221251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 11220210221251 its reverse (15212201202211), we get a palindrome (26432411423462).

The spelling of 11220210221251 in words is "eleven trillion, two hundred twenty billion, two hundred ten million, two hundred twenty-one thousand, two hundred fifty-one".