1021001212012 has 12 divisors (see below), whose sum is σ = 1864436996016. Its totient is φ = 488304927440.

The previous prime is 1021001212001. The next prime is 1021001212013. The reversal of 1021001212012 is 2102121001201.

It is a junction number, because it is equal to n+sod(n) for n = 1021001211983 and 1021001212001.

It is not an unprimeable number, because it can be changed into a prime (1021001212013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5548919539 + ... + 5548919722.

It is an arithmetic number, because the mean of its divisors is an integer number (155369749668).

Almost surely, 2^{1021001212012} is an apocalyptic number.

It is an amenable number.

1021001212012 is a deficient number, since it is larger than the sum of its proper divisors (843435784004).

1021001212012 is a wasteful number, since it uses less digits than its factorization.

1021001212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097839288 (or 11097839286 counting only the distinct ones).

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

Adding to 1021001212012 its reverse (2102121001201), we get a palindrome (3123122213213).

The spelling of 1021001212012 in words is "one trillion, twenty-one billion, one million, two hundred twelve thousand, twelve".