1212002121012 has 24 divisors (see below), whose sum is σ = 2828053099200. Its totient is φ = 403993828416.

The previous prime is 1212002120977. The next prime is 1212002121041. The reversal of 1212002121012 is 2101212002121.

It is a junction number, because it is equal to n+sod(n) for n = 1212002120982 and 1212002121000.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 98712 + ... + 1560047.

It is an arithmetic number, because the mean of its divisors is an integer number (117835545800).

Almost surely, 2^{1212002121012} is an apocalyptic number.

1212002121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212002121012 is an abundant number, since it is smaller than the sum of its proper divisors (1616050978188).

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

1212002121012 is a wasteful number, since it uses less digits than its factorization.

1212002121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719655 (or 1719653 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212002121012 its reverse (2101212002121), we get a palindrome (3313214123133).

The spelling of 1212002121012 in words is "one trillion, two hundred twelve billion, two million, one hundred twenty-one thousand, twelve".