10221311 has 4 divisors (see below), whose sum is σ = 10573800. Its totient is φ = 9868824.

The previous prime is 10221293. The next prime is 10221347. The reversal of 10221311 is 11312201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312201 = 19 ⋅595379.

It is a cyclic number.

It is not a de Polignac number, because 10221311 - 2⁶ = 10221247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221292 and 10221301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176201 + ... + 176258.

It is an arithmetic number, because the mean of its divisors is an integer number (2643450).

Almost surely, 2^10221311 is an apocalyptic number.

10221311 is a deficient number, since it is larger than the sum of its proper divisors (352489).

10221311 is an equidigital number, since it uses as much as digits as its factorization.

10221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352488.

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

The square root of 10221311 is about 3197.0785101402. The cubic root of 10221311 is about 217.0212201494.

Adding to 10221311 its reverse (11312201), we get a palindrome (21533512).

The spelling of 10221311 in words is "ten million, two hundred twenty-one thousand, three hundred eleven".