1000121121112 has 16 divisors (see below), whose sum is σ = 1875238563600. Its totient is φ = 500057504160.

The previous prime is 1000121121047. The next prime is 1000121121121. The reversal of 1000121121112 is 2111211210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1000121121092 and 1000121121101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635162 + ... + 2161942.

It is an arithmetic number, because the mean of its divisors is an integer number (117202410225).

Almost surely, 2^{1000121121112} is an apocalyptic number.

It is an amenable number.

1000121121112 is a deficient number, since it is larger than the sum of its proper divisors (875117442488).

1000121121112 is a wasteful number, since it uses less digits than its factorization.

1000121121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764106 (or 764102 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1000121121112 its reverse (2111211210001), we get a palindrome (3111332331113).

The spelling of 1000121121112 in words is "one trillion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".