11011221222143 has 2 divisors, whose sum is σ = 11011221222144. Its totient is φ = 11011221222142.

The previous prime is 11011221222103. The next prime is 11011221222277. The reversal of 11011221222143 is 34122212211011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011221222143 - 2³² = 11006926254847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011221222103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505610611071 + 5505610611072.

It is an arithmetic number, because the mean of its divisors is an integer number (5505610611072).

Almost surely, 2^{11011221222143} is an apocalyptic number.

11011221222143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011221222143 is an equidigital number, since it uses as much as digits as its factorization.

11011221222143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 11011221222143 its reverse (34122212211011), we get a palindrome (45133433433154).

The spelling of 11011221222143 in words is "eleven trillion, eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred forty-three".