221303121029971 has 2 divisors, whose sum is σ = 221303121029972. Its totient is φ = 221303121029970.

The previous prime is 221303121029951. The next prime is 221303121030001. The reversal of 221303121029971 is 179920121303122.

221303121029971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221303121029971 - 2²³ = 221303112641363 is a prime.

It is not a weakly prime, because it can be changed into another prime (221303121029951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110651560514985 + 110651560514986.

It is an arithmetic number, because the mean of its divisors is an integer number (110651560514986).

Almost surely, 2^{221303121029971} is an apocalyptic number.

221303121029971 is a deficient number, since it is larger than the sum of its proper divisors (1).

221303121029971 is an equidigital number, since it uses as much as digits as its factorization.

221303121029971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 221303121029971 in words is "two hundred twenty-one trillion, three hundred three billion, one hundred twenty-one million, twenty-nine thousand, nine hundred seventy-one".