2311101213221 has 8 divisors (see below), whose sum is σ = 2432752627200. Its totient is φ = 2189451250080.

The previous prime is 2311101213199. The next prime is 2311101213287. The reversal of 2311101213221 is 1223121011132.

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

It is not a de Polignac number, because 2311101213221 - 2¹⁴ = 2311101196837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311101213193 and 2311101213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311101243221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4768316 + ... + 5230586.

It is an arithmetic number, because the mean of its divisors is an integer number (304094078400).

Almost surely, 2^{2311101213221} is an apocalyptic number.

It is an amenable number.

2311101213221 is a deficient number, since it is larger than the sum of its proper divisors (121651413979).

2311101213221 is a wasteful number, since it uses less digits than its factorization.

2311101213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725419.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2311101213221 its reverse (1223121011132), we get a palindrome (3534222224353).

The spelling of 2311101213221 in words is "two trillion, three hundred eleven billion, one hundred one million, two hundred thirteen thousand, two hundred twenty-one".