1001221012012 has 24 divisors (see below), whose sum is σ = 1892172592800. Its totient is φ = 460814804736.

The previous prime is 1001221011929. The next prime is 1001221012013. The reversal of 1001221012012 is 2102101221001.

1001221012012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1001221011983 and 1001221012001.

It is not an unprimeable number, because it can be changed into a prime (1001221012013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26797837 + ... + 26835172.

It is an arithmetic number, because the mean of its divisors is an integer number (78840524700).

Almost surely, 2^{1001221012012} is an apocalyptic number.

It is an amenable number.

1001221012012 is a deficient number, since it is larger than the sum of its proper divisors (890951580788).

1001221012012 is a wasteful number, since it uses less digits than its factorization.

1001221012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53633385 (or 53633383 counting only the distinct ones).

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

Adding to 1001221012012 its reverse (2102101221001), we get a palindrome (3103322233013).

The spelling of 1001221012012 in words is "one trillion, one billion, two hundred twenty-one million, twelve thousand, twelve".