221212100010079 has 2 divisors, whose sum is σ = 221212100010080. Its totient is φ = 221212100010078.

The previous prime is 221212100010059. The next prime is 221212100010113. The reversal of 221212100010079 is 970010001212122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221212100010079 - 2⁵ = 221212100010047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221212100010059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606050005039 + 110606050005040.

It is an arithmetic number, because the mean of its divisors is an integer number (110606050005040).

Almost surely, 2^{221212100010079} is an apocalyptic number.

221212100010079 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212100010079 is an equidigital number, since it uses as much as digits as its factorization.

221212100010079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 221212100010079 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred million, ten thousand, seventy-nine".