2311220332221 has 8 divisors (see below), whose sum is σ = 3081698604864. Its totient is φ = 1540777807200.

The previous prime is 2311220332199. The next prime is 2311220332229. The reversal of 2311220332221 is 1222330221132.

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

It is not a de Polignac number, because 2311220332221 - 2⁵ = 2311220332189 is a prime.

It is a super-2 number, since 2×2311220332221² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2311220332191 and 2311220332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311220332229) 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, 8785680 + ... + 9044921.

It is an arithmetic number, because the mean of its divisors is an integer number (385212325608).

Almost surely, 2^{2311220332221} is an apocalyptic number.

It is an amenable number.

2311220332221 is a deficient number, since it is larger than the sum of its proper divisors (770478272643).

2311220332221 is a wasteful number, since it uses less digits than its factorization.

2311220332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17873811.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2311220332221 its reverse (1222330221132), we get a palindrome (3533550553353).

The spelling of 2311220332221 in words is "two trillion, three hundred eleven billion, two hundred twenty million, three hundred thirty-two thousand, two hundred twenty-one".