1002121201212 has 12 divisors (see below), whose sum is σ = 2338282802856. Its totient is φ = 334040400400.

The previous prime is 1002121201189. The next prime is 1002121201219. The reversal of 1002121201212 is 2121021212001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1002121201191 and 1002121201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002121201219) 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 3 ways as a sum of consecutive naturals, for example, 41755050039 + ... + 41755050062.

It is an arithmetic number, because the mean of its divisors is an integer number (194856900238).

Almost surely, 2^{1002121201212} is an apocalyptic number.

1002121201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002121201212 is an abundant number, since it is smaller than the sum of its proper divisors (1336161601644).

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

1002121201212 is a wasteful number, since it uses less digits than its factorization.

1002121201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83510100108 (or 83510100106 counting only the distinct ones).

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

Adding to 1002121201212 its reverse (2121021212001), we get a palindrome (3123142413213).

The spelling of 1002121201212 in words is "one trillion, two billion, one hundred twenty-one million, two hundred one thousand, two hundred twelve".