1001012121212 has 12 divisors (see below), whose sum is σ = 1751796917136. Its totient is φ = 500498716320.

The previous prime is 1001012121181. The next prime is 1001012121217. The reversal of 1001012121212 is 2121212101001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001012121217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523489 + ... + 2079192.

It is an arithmetic number, because the mean of its divisors is an integer number (145983076428).

Almost surely, 2^{1001012121212} is an apocalyptic number.

It is an amenable number.

1001012121212 is a deficient number, since it is larger than the sum of its proper divisors (750784795924).

1001012121212 is a wasteful number, since it uses less digits than its factorization.

1001012121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672148 (or 3672146 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001012121212 its reverse (2121212101001), we get a palindrome (3122224222213).

The spelling of 1001012121212 in words is "one trillion, one billion, twelve million, one hundred twenty-one thousand, two hundred twelve".