221021112102269 has 2 divisors, whose sum is σ = 221021112102270. Its totient is φ = 221021112102268.

The previous prime is 221021112102121. The next prime is 221021112102277. The reversal of 221021112102269 is 962201211120122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124856376427225 + 96164735675044 = 11173915^2 + 9806362^2 .

It is a cyclic number.

It is not a de Polignac number, because 221021112102269 - 2¹² = 221021112098173 is a prime.

It is a super-2 number, since 2×221021112102269² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021112162269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510556051134 + 110510556051135.

It is an arithmetic number, because the mean of its divisors is an integer number (110510556051135).

Almost surely, 2^{221021112102269} is an apocalyptic number.

It is an amenable number.

221021112102269 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021112102269 is an equidigital number, since it uses as much as digits as its factorization.

221021112102269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 221021112102269 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twelve million, one hundred two thousand, two hundred sixty-nine".