1111222211331 has 32 divisors (see below), whose sum is σ = 1534764146688. Its totient is φ = 714701746080.

The previous prime is 1111222211311. The next prime is 1111222211399. The reversal of 1111222211331 is 1331122221111.

It is not a de Polignac number, because 1111222211331 - 2¹¹ = 1111222209283 is a prime.

It is a super-2 number, since 2×1111222211331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111222211298 and 1111222211307.

It is not an unprimeable number, because it can be changed into a prime (1111222211311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84516300 + ... + 84529446.

It is an arithmetic number, because the mean of its divisors is an integer number (47961379584).

Almost surely, 2^{1111222211331} is an apocalyptic number.

1111222211331 is a deficient number, since it is larger than the sum of its proper divisors (423541935357).

1111222211331 is a wasteful number, since it uses less digits than its factorization.

1111222211331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21711.

The product of its digits is 144, while the sum is 21.

Adding to 1111222211331 its reverse (1331122221111), we get a palindrome (2442344432442).

The spelling of 1111222211331 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, three hundred thirty-one".