11102221221251 has 2 divisors, whose sum is σ = 11102221221252. Its totient is φ = 11102221221250.

The previous prime is 11102221221233. The next prime is 11102221221331. The reversal of 11102221221251 is 15212212220111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11102221221251 - 2¹⁰ = 11102221220227 is a prime.

It is not a weakly prime, because it can be changed into another prime (11102221221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551110610625 + 5551110610626.

It is an arithmetic number, because the mean of its divisors is an integer number (5551110610626).

Almost surely, 2^{11102221221251} is an apocalyptic number.

11102221221251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102221221251 is an equidigital number, since it uses as much as digits as its factorization.

11102221221251 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 23.

Adding to 11102221221251 its reverse (15212212220111), we get a palindrome (26314433441362).

The spelling of 11102221221251 in words is "eleven trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred fifty-one".