2112211231321 has 16 divisors (see below), whose sum is σ = 2209210122240. Its totient is φ = 2015647862800.

The previous prime is 2112211231307. The next prime is 2112211231327. The reversal of 2112211231321 is 1231321122112.

It is a happy number.

It is not a de Polignac number, because 2112211231321 - 2⁵ = 2112211231289 is a prime.

It is a super-2 number, since 2×2112211231321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112211231292 and 2112211231301.

It is not an unprimeable number, because it can be changed into a prime (2112211231327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18022650 + ... + 18139468.

It is an arithmetic number, because the mean of its divisors is an integer number (138075632640).

Almost surely, 2^{2112211231321} is an apocalyptic number.

It is an amenable number.

2112211231321 is a deficient number, since it is larger than the sum of its proper divisors (96998890919).

2112211231321 is a wasteful number, since it uses less digits than its factorization.

2112211231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118676.

The product of its digits is 288, while the sum is 22.

Adding to 2112211231321 its reverse (1231321122112), we get a palindrome (3343532353433).

The spelling of 2112211231321 in words is "two trillion, one hundred twelve billion, two hundred eleven million, two hundred thirty-one thousand, three hundred twenty-one".