11220011999971 has 2 divisors, whose sum is σ = 11220011999972. Its totient is φ = 11220011999970.

The previous prime is 11220011999953. The next prime is 11220012000061. The reversal of 11220011999971 is 17999911002211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11220011999971 - 2⁹ = 11220011999459 is a prime.

It is not a weakly prime, because it can be changed into another prime (11220011999071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610005999985 + 5610005999986.

It is an arithmetic number, because the mean of its divisors is an integer number (5610005999986).

Almost surely, 2^{11220011999971} is an apocalyptic number.

11220011999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220011999971 is an equidigital number, since it uses as much as digits as its factorization.

11220011999971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 52.

The spelling of 11220011999971 in words is "eleven trillion, two hundred twenty billion, eleven million, nine hundred ninety-nine thousand, nine hundred seventy-one".