2221012169 has 2 divisors, whose sum is σ = 2221012170. Its totient is φ = 2221012168.

The previous prime is 2221012159. The next prime is 2221012217. The reversal of 2221012169 is 9612101222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500787600 + 720224569 = 38740^2 + 26837^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221012169 - 2²⁴ = 2204234953 is a prime.

It is a super-2 number, since 2×2221012169² = 9865790109692169122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221012139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110506084 + 1110506085.

It is an arithmetic number, because the mean of its divisors is an integer number (1110506085).

Almost surely, 2^2221012169 is an apocalyptic number.

It is an amenable number.

2221012169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221012169 is an equidigital number, since it uses as much as digits as its factorization.

2221012169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2221012169 is about 47127.6157788615. The cubic root of 2221012169 is about 1304.7189774745.

The spelling of 2221012169 in words is "two billion, two hundred twenty-one million, twelve thousand, one hundred sixty-nine".