1031223121312 has 12 divisors (see below), whose sum is σ = 2030220520146. Its totient is φ = 515611560640.

The previous prime is 1031223121289. The next prime is 1031223121339. The reversal of 1031223121312 is 2131213221301.

It can be written as a sum of positive squares in only one way, i.e., 999512059536 + 31711061776 = 999756^2 + 178076^2 .

It is a super-2 number, since 2×1031223121312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16112861239 + ... + 16112861302.

Almost surely, 2^{1031223121312} is an apocalyptic number.

It is an amenable number.

1031223121312 is a deficient number, since it is larger than the sum of its proper divisors (998997398834).

1031223121312 is an equidigital number, since it uses as much as digits as its factorization.

1031223121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32225722551 (or 32225722543 counting only the distinct ones).

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

Adding to 1031223121312 its reverse (2131213221301), we get a palindrome (3162436342613).

The spelling of 1031223121312 in words is "one trillion, thirty-one billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred twelve".