2111223231321 has 8 divisors (see below), whose sum is σ = 2891044425024. Its totient is φ = 1369442095920.

The previous prime is 2111223231277. The next prime is 2111223231329. The reversal of 2111223231321 is 1231323221112.

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

It is not a de Polignac number, because 2111223231321 - 2¹⁰ = 2111223230297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111223231291 and 2111223231300.

It is not an unprimeable number, because it can be changed into a prime (2111223231329) 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, 9510014445 + ... + 9510014666.

It is an arithmetic number, because the mean of its divisors is an integer number (361380553128).

Almost surely, 2^{2111223231321} is an apocalyptic number.

It is an amenable number.

2111223231321 is a deficient number, since it is larger than the sum of its proper divisors (779821193703).

2111223231321 is a wasteful number, since it uses less digits than its factorization.

2111223231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19020029151.

The product of its digits is 864, while the sum is 24.

Adding to 2111223231321 its reverse (1231323221112), we get a palindrome (3342546452433).

It can be divided in two parts, 211122 and 3231321, that added together give a palindrome (3442443).

The spelling of 2111223231321 in words is "two trillion, one hundred eleven billion, two hundred twenty-three million, two hundred thirty-one thousand, three hundred twenty-one".