1313231231222 has 32 divisors (see below), whose sum is σ = 2019227543424. Its totient is φ = 640260457600.

The previous prime is 1313231231209. The next prime is 1313231231231. The reversal of 1313231231222 is 2221321323131.

It is a super-2 number, since 2×1313231231222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313231231191 and 1313231231200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148199072 + ... + 148207932.

It is an arithmetic number, because the mean of its divisors is an integer number (63100860732).

Almost surely, 2^{1313231231222} is an apocalyptic number.

1313231231222 is a deficient number, since it is larger than the sum of its proper divisors (705996312202).

1313231231222 is a wasteful number, since it uses less digits than its factorization.

1313231231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14584.

The product of its digits is 2592, while the sum is 26.

Adding to 1313231231222 its reverse (2221321323131), we get a palindrome (3534552554353).

The spelling of 1313231231222 in words is "one trillion, three hundred thirteen billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred twenty-two".