1012212100012 has 24 divisors (see below), whose sum is σ = 1875836669616. Its totient is φ = 476267248128.

The previous prime is 1012212100001. The next prime is 1012212100019. The reversal of 1012212100012 is 2100012122101.

It is a junction number, because it is equal to n+sod(n) for n = 1012212099965 and 1012212100001.

It is not an unprimeable number, because it can be changed into a prime (1012212100019) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 577833 + ... + 1535680.

It is an arithmetic number, because the mean of its divisors is an integer number (78159861234).

Almost surely, 2^{1012212100012} is an apocalyptic number.

It is an amenable number.

1012212100012 is a deficient number, since it is larger than the sum of its proper divisors (863624569604).

1012212100012 is a wasteful number, since it uses less digits than its factorization.

1012212100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120577 (or 2120575 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012212100012 its reverse (2100012122101), we get a palindrome (3112224222113).

The spelling of 1012212100012 in words is "one trillion, twelve billion, two hundred twelve million, one hundred thousand, twelve".