1231213203122 has 96 divisors (see below), whose sum is σ = 2294027625216. Its totient is φ = 485232768000.

The previous prime is 1231213203089. The next prime is 1231213203133. The reversal of 1231213203122 is 2213023121321.

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 47 ways as a sum of consecutive naturals, for example, 37251188 + ... + 37284224.

It is an arithmetic number, because the mean of its divisors is an integer number (23896121096).

Almost surely, 2^{1231213203122} is an apocalyptic number.

1231213203122 is a deficient number, since it is larger than the sum of its proper divisors (1062814422094).

1231213203122 is a wasteful number, since it uses less digits than its factorization.

1231213203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33292 (or 33275 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1231213203122 its reverse (2213023121321), we get a palindrome (3444236324443).

The spelling of 1231213203122 in words is "one trillion, two hundred thirty-one billion, two hundred thirteen million, two hundred three thousand, one hundred twenty-two".