2011210221 has 24 divisors (see below), whose sum is σ = 2797566240. Its totient is φ = 1284921792.

The previous prime is 2011210153. The next prime is 2011210259. The reversal of 2011210221 is 1220121102.

It is not a de Polignac number, because 2011210221 - 2⁷ = 2011210093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011210197 and 2011210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011210261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271515 + ... + 278823.

It is an arithmetic number, because the mean of its divisors is an integer number (116565260).

Almost surely, 2^2011210221 is an apocalyptic number.

It is an amenable number.

2011210221 is a deficient number, since it is larger than the sum of its proper divisors (786356019).

2011210221 is an equidigital number, since it uses as much as digits as its factorization.

2011210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453 (or 7416 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2011210221 is about 44846.5184936356. The cubic root of 2011210221 is about 1262.2706643002.

Adding to 2011210221 its reverse (1220121102), we get a palindrome (3231331323).

The spelling of 2011210221 in words is "two billion, eleven million, two hundred ten thousand, two hundred twenty-one".