1231122211330 has 24 divisors (see below), whose sum is σ = 2435790559356. Its totient is φ = 447680803680.

The previous prime is 1231122211271. The next prime is 1231122211367. The reversal of 1231122211330 is 331122211321.

It can be written as a sum of positive squares in 2 ways, for example, as 1228047397929 + 3074813401 = 1108173^2 + 55451^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 508726977 + ... + 508729396.

Almost surely, 2^{1231122211330} is an apocalyptic number.

1231122211330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231122211330 is a deficient number, since it is larger than the sum of its proper divisors (1204668348026).

1231122211330 is a wasteful number, since it uses less digits than its factorization.

1231122211330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017456402 (or 1017456391 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1231122211330 its reverse (331122211321), we get a palindrome (1562244422651).

Subtracting from 1231122211330 its reverse (331122211321), we obtain a palindrome (900000000009).

The spelling of 1231122211330 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, two hundred eleven thousand, three hundred thirty".