221012302332197 has 2 divisors, whose sum is σ = 221012302332198. Its totient is φ = 221012302332196.

The previous prime is 221012302332121. The next prime is 221012302332247. The reversal of 221012302332197 is 791233203210122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219846779127361 + 1165523204836 = 14827231^2 + 1079594^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012302332197 - 2¹⁰ = 221012302331173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221012302332197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221012302632197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506151166098 + 110506151166099.

It is an arithmetic number, because the mean of its divisors is an integer number (110506151166099).

Almost surely, 2^{221012302332197} is an apocalyptic number.

It is an amenable number.

221012302332197 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012302332197 is an equidigital number, since it uses as much as digits as its factorization.

221012302332197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 221012302332197 in words is "two hundred twenty-one trillion, twelve billion, three hundred two million, three hundred thirty-two thousand, one hundred ninety-seven".