1000212121112 has 16 divisors (see below), whose sum is σ = 1875456225360. Its totient is φ = 500090461024.

The previous prime is 1000212121087. The next prime is 1000212121141. The reversal of 1000212121112 is 2111212120001.

It is a super-2 number, since 2×1000212121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1675163 + ... + 2192394.

It is an arithmetic number, because the mean of its divisors is an integer number (117216014085).

Almost surely, 2^{1000212121112} is an apocalyptic number.

It is an amenable number.

1000212121112 is a deficient number, since it is larger than the sum of its proper divisors (875244104248).

1000212121112 is a wasteful number, since it uses less digits than its factorization.

1000212121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899890 (or 3899886 counting only the distinct ones).

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

Adding to 1000212121112 its reverse (2111212120001), we get a palindrome (3111424241113).

The spelling of 1000212121112 in words is "one trillion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".