220021201012169 has 2 divisors, whose sum is σ = 220021201012170. Its totient is φ = 220021201012168.

The previous prime is 220021201012147. The next prime is 220021201012219. The reversal of 220021201012169 is 961210102120022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206105876406544 + 13915324605625 = 14356388^2 + 3730325^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021201012169 - 2¹² = 220021201008073 is a prime.

It is a super-2 number, since 2×220021201012169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220021201012069) 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, 110010600506084 + 110010600506085.

It is an arithmetic number, because the mean of its divisors is an integer number (110010600506085).

Almost surely, 2^{220021201012169} is an apocalyptic number.

It is an amenable number.

220021201012169 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021201012169 is an equidigital number, since it uses as much as digits as its factorization.

220021201012169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 220021201012169 in words is "two hundred twenty trillion, twenty-one billion, two hundred one million, twelve thousand, one hundred sixty-nine".