10113221 has 2 divisors, whose sum is σ = 10113222. Its totient is φ = 10113220.

The previous prime is 10113211. The next prime is 10113241. The reversal of 10113221 is 12231101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 2217121 = 2810^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10113221 - 2⁶ = 10113157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10113211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056610 + 5056611.

It is an arithmetic number, because the mean of its divisors is an integer number (5056611).

Almost surely, 2^10113221 is an apocalyptic number.

It is an amenable number.

10113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10113221 is an equidigital number, since it uses as much as digits as its factorization.

10113221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 10113221 is about 3180.1290854303. The cubic root of 10113221 is about 216.2535103621.

Adding to 10113221 its reverse (12231101), we get a palindrome (22344322).

The spelling of 10113221 in words is "ten million, one hundred thirteen thousand, two hundred twenty-one".