202221111999971 has 2 divisors, whose sum is σ = 202221111999972. Its totient is φ = 202221111999970.

The previous prime is 202221111999883. The next prime is 202221111999979. The reversal of 202221111999971 is 179999111122202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202221111999971 - 2¹⁴ = 202221111983587 is a prime.

It is not a weakly prime, because it can be changed into another prime (202221111999979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110555999985 + 101110555999986.

It is an arithmetic number, because the mean of its divisors is an integer number (101110555999986).

Almost surely, 2^{202221111999971} is an apocalyptic number.

202221111999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221111999971 is an equidigital number, since it uses as much as digits as its factorization.

202221111999971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 56.

The spelling of 202221111999971 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred eleven million, nine hundred ninety-nine thousand, nine hundred seventy-one".