221348597 has 2 divisors, whose sum is σ = 221348598. Its totient is φ = 221348596.

The previous prime is 221348593. The next prime is 221348639. The reversal of 221348597 is 795843122.

221348597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220641316 + 707281 = 14854^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 221348597 - 2² = 221348593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221348593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110674298 + 110674299.

It is an arithmetic number, because the mean of its divisors is an integer number (110674299).

Almost surely, 2^221348597 is an apocalyptic number.

It is an amenable number.

221348597 is a deficient number, since it is larger than the sum of its proper divisors (1).

221348597 is an equidigital number, since it uses as much as digits as its factorization.

221348597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 221348597 is about 14877.7887133808. The cubic root of 221348597 is about 604.9120806603.

The spelling of 221348597 in words is "two hundred twenty-one million, three hundred forty-eight thousand, five hundred ninety-seven".