10221211 has 16 divisors (see below), whose sum is σ = 13724928. Its totient is φ = 7351200.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221211 is 11212201.

10221211 = T₂₄₀ + T₂₄₁ + ... + T₄₂₁.

10221211 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10221211 - 2³ = 10221203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10221511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (857808).

Almost surely, 2^10221211 is an apocalyptic number.

10221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10221211 is a deficient number, since it is larger than the sum of its proper divisors (3503717).

10221211 is a wasteful number, since it uses less digits than its factorization.

10221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 10221211 is about 3197.0628708238. The cubic root of 10221211 is about 217.0205124061.

Adding to 10221211 its reverse (11212201), we get a palindrome (21433412).

The spelling of 10221211 in words is "ten million, two hundred twenty-one thousand, two hundred eleven".