10697221 has 2 divisors, whose sum is σ = 10697222. Its totient is φ = 10697220.

The previous prime is 10697179. The next prime is 10697227. The reversal of 10697221 is 12279601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 3568321 = 2670^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 10697221 - 2⁹ = 10696709 is a prime.

It is a super-2 number, since 2×10697221² = 228861074245682, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10697221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10697227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5348610 + 5348611.

It is an arithmetic number, because the mean of its divisors is an integer number (5348611).

Almost surely, 2^10697221 is an apocalyptic number.

It is an amenable number.

10697221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10697221 is an equidigital number, since it uses as much as digits as its factorization.

10697221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 10697221 is about 3270.6606366299. The cubic root of 10697221 is about 220.3384666106.

The spelling of 10697221 in words is "ten million, six hundred ninety-seven thousand, two hundred twenty-one".