1231222131330 has 32 divisors (see below), whose sum is σ = 2992337337600. Its totient is φ = 324169876992.

The previous prime is 1231222131313. The next prime is 1231222131343. The reversal of 1231222131330 is 331312221321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231222131330.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 259749135 + ... + 259753874.

It is an arithmetic number, because the mean of its divisors is an integer number (93510541800).

Almost surely, 2^{1231222131330} is an apocalyptic number.

1231222131330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231222131330 is an abundant number, since it is smaller than the sum of its proper divisors (1761115206270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231222131330 is a wasteful number, since it uses less digits than its factorization.

1231222131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519503098.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231222131330 its reverse (331312221321), we get a palindrome (1562534352651).

The spelling of 1231222131330 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-one thousand, three hundred thirty".