2211342521 has 8 divisors (see below), whose sum is σ = 2324091840. Its totient is φ = 2099976912.

The previous prime is 2211342517. The next prime is 2211342547. The reversal of 2211342521 is 1252431122.

2211342521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2211342521 - 2² = 2211342517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211344521) 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, 342650 + ... + 349043.

It is an arithmetic number, because the mean of its divisors is an integer number (290511480).

Almost surely, 2^2211342521 is an apocalyptic number.

It is an amenable number.

2211342521 is a deficient number, since it is larger than the sum of its proper divisors (112749319).

2211342521 is a wasteful number, since it uses less digits than its factorization.

2211342521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691855.

The product of its digits is 960, while the sum is 23.

The square root of 2211342521 is about 47024.9138329886. The cubic root of 2211342521 is about 1302.8227659327.

Adding to 2211342521 its reverse (1252431122), we get a palindrome (3463773643).

The spelling of 2211342521 in words is "two billion, two hundred eleven million, three hundred forty-two thousand, five hundred twenty-one".