1213020100012 has 24 divisors (see below), whose sum is σ = 2436191009280. Its totient is φ = 517690583760.

The previous prime is 1213020099989. The next prime is 1213020100109. The reversal of 1213020100012 is 2100010203121.

It is a junction number, because it is equal to n+sod(n) for n = 1213020099965 and 1213020100001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90625414 + ... + 90638797.

It is an arithmetic number, because the mean of its divisors is an integer number (101507958720).

Almost surely, 2^{1213020100012} is an apocalyptic number.

It is an amenable number.

1213020100012 is an abundant number, since it is smaller than the sum of its proper divisors (1223170909268).

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

1213020100012 is a wasteful number, since it uses less digits than its factorization.

1213020100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181264461 (or 181264459 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1213020100012 its reverse (2100010203121), we get a palindrome (3313030303133).

The spelling of 1213020100012 in words is "one trillion, two hundred thirteen billion, twenty million, one hundred thousand, twelve".