10211220211 has 4 divisors (see below), whose sum is σ = 10384291800. Its totient is φ = 10038148624.

The previous prime is 10211220197. The next prime is 10211220259. The reversal of 10211220211 is 11202211201.

10211220211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11202211201 = 5659 ⋅1979539.

It is a cyclic number.

It is not a de Polignac number, because 10211220211 - 2²¹ = 10209123059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211220191 and 10211220200.

It is not an unprimeable number, because it can be changed into a prime (10211220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86535706 + ... + 86535823.

It is an arithmetic number, because the mean of its divisors is an integer number (2596072950).

Almost surely, 2^10211220211 is an apocalyptic number.

10211220211 is a deficient number, since it is larger than the sum of its proper divisors (173071589).

10211220211 is an equidigital number, since it uses as much as digits as its factorization.

10211220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173071588.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10211220211 its reverse (11202211201), we get a palindrome (21413431412).

The spelling of 10211220211 in words is "ten billion, two hundred eleven million, two hundred twenty thousand, two hundred eleven".