221269007 has 2 divisors, whose sum is σ = 221269008. Its totient is φ = 221269006.

The previous prime is 221268989. The next prime is 221269031. The reversal of 221269007 is 700962122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221269007 - 2¹⁰ = 221267983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221269207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110634503 + 110634504.

It is an arithmetic number, because the mean of its divisors is an integer number (110634504).

Almost surely, 2^221269007 is an apocalyptic number.

221269007 is a deficient number, since it is larger than the sum of its proper divisors (1).

221269007 is an equidigital number, since it uses as much as digits as its factorization.

221269007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 221269007 is about 14875.1136802379. The cubic root of 221269007 is about 604.8395695101.

The spelling of 221269007 in words is "two hundred twenty-one million, two hundred sixty-nine thousand, seven".