1231222023012 has 48 divisors (see below), whose sum is σ = 3067783488000. Its totient is φ = 383472929280.

The previous prime is 1231222022951. The next prime is 1231222023037. The reversal of 1231222023012 is 2103202221321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231222023012.

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, 57053637 + ... + 57075212.

It is an arithmetic number, because the mean of its divisors is an integer number (63912156000).

Almost surely, 2^{1231222023012} is an apocalyptic number.

1231222023012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231222023012 is an abundant number, since it is smaller than the sum of its proper divisors (1836561464988).

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

1231222023012 is a wasteful number, since it uses less digits than its factorization.

1231222023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114128916 (or 114128914 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1231222023012 its reverse (2103202221321), we get a palindrome (3334424244333).

The spelling of 1231222023012 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, twenty-three thousand, twelve".