221012101202279 has 2 divisors, whose sum is σ = 221012101202280. Its totient is φ = 221012101202278.

The previous prime is 221012101202171. The next prime is 221012101202323. The reversal of 221012101202279 is 972202101210122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221012101202279 - 2⁸ = 221012101202023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221012101202779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506050601139 + 110506050601140.

It is an arithmetic number, because the mean of its divisors is an integer number (110506050601140).

Almost surely, 2^{221012101202279} is an apocalyptic number.

221012101202279 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012101202279 is an equidigital number, since it uses as much as digits as its factorization.

221012101202279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 221012101202279 in words is "two hundred twenty-one trillion, twelve billion, one hundred one million, two hundred two thousand, two hundred seventy-nine".