2011320221 has 8 divisors (see below), whose sum is σ = 2122629600. Its totient is φ = 1900555920.

The previous prime is 2011320197. The next prime is 2011320239. The reversal of 2011320221 is 1220231102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011320221 - 2²² = 2007125917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011320196 and 2011320205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011320271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128675 + ... + 143456.

It is an arithmetic number, because the mean of its divisors is an integer number (265328700).

Almost surely, 2^2011320221 is an apocalyptic number.

It is an amenable number.

2011320221 is a deficient number, since it is larger than the sum of its proper divisors (111309379).

2011320221 is a wasteful number, since it uses less digits than its factorization.

2011320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272539.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2011320221 is about 44847.7448819893. The cubic root of 2011320221 is about 1262.2936765211.

Adding to 2011320221 its reverse (1220231102), we get a palindrome (3231551323).

The spelling of 2011320221 in words is "two billion, eleven million, three hundred twenty thousand, two hundred twenty-one".