10653401221 has 2 divisors, whose sum is σ = 10653401222. Its totient is φ = 10653401220.

The previous prime is 10653401201. The next prime is 10653401233. The reversal of 10653401221 is 12210435601.

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., 9429381025 + 1224020196 = 97105^2 + 34986^2 .

It is a cyclic number.

It is not a de Polignac number, because 10653401221 - 2⁵ = 10653401189 is a prime.

It is a super-2 number, since 2×10653401221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10653401201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5326700610 + 5326700611.

It is an arithmetic number, because the mean of its divisors is an integer number (5326700611).

Almost surely, 2^10653401221 is an apocalyptic number.

It is an amenable number.

10653401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10653401221 is an equidigital number, since it uses as much as digits as its factorization.

10653401221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 10653401221 its reverse (12210435601), we get a palindrome (22863836822).

The spelling of 10653401221 in words is "ten billion, six hundred fifty-three million, four hundred one thousand, two hundred twenty-one".