1213123022988 has 48 divisors (see below), whose sum is σ = 2877571070976. Its totient is φ = 397710797760.

The previous prime is 1213123022987. The next prime is 1213123022999. The reversal of 1213123022988 is 8892203213121.

It is not an unprimeable number, because it can be changed into a prime (1213123022987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2508823 + ... + 2953038.

It is an arithmetic number, because the mean of its divisors is an integer number (59949397312).

Almost surely, 2^{1213123022988} is an apocalyptic number.

It is an amenable number.

1213123022988 is an abundant number, since it is smaller than the sum of its proper divisors (1664448047988).

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

1213123022988 is a wasteful number, since it uses less digits than its factorization.

1213123022988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462174 (or 5462172 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 1213123022988 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-two thousand, nine hundred eighty-eight".