221222121010229 has 2 divisors, whose sum is σ = 221222121010230. Its totient is φ = 221222121010228.

The previous prime is 221222121010213. The next prime is 221222121010333. The reversal of 221222121010229 is 922010121222122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202071257141329 + 19150863868900 = 14215177^2 + 4376170^2 .

It is a cyclic number.

It is not a de Polignac number, because 221222121010229 - 2⁴ = 221222121010213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221222121018229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611060505114 + 110611060505115.

It is an arithmetic number, because the mean of its divisors is an integer number (110611060505115).

Almost surely, 2^{221222121010229} is an apocalyptic number.

It is an amenable number.

221222121010229 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222121010229 is an equidigital number, since it uses as much as digits as its factorization.

221222121010229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 221222121010229 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty-one million, ten thousand, two hundred twenty-nine".