221474069 has 2 divisors, whose sum is σ = 221474070. Its totient is φ = 221474068.

The previous prime is 221474053. The next prime is 221474101. The reversal of 221474069 is 960474122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132549169 + 88924900 = 11513^2 + 9430^2 .

It is a cyclic number.

It is not a de Polignac number, because 221474069 - 2⁴ = 221474053 is a prime.

It is a super-2 number, since 2×221474069² = 98101526478833522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221474009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110737034 + 110737035.

It is an arithmetic number, because the mean of its divisors is an integer number (110737035).

Almost surely, 2^221474069 is an apocalyptic number.

It is an amenable number.

221474069 is a deficient number, since it is larger than the sum of its proper divisors (1).

221474069 is an equidigital number, since it uses as much as digits as its factorization.

221474069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 221474069 is about 14882.0048716562. The cubic root of 221474069 is about 605.0263577069.

The spelling of 221474069 in words is "two hundred twenty-one million, four hundred seventy-four thousand, sixty-nine".