2001012220012 has 48 divisors (see below), whose sum is σ = 3820488289632. Its totient is φ = 911481246720.

The previous prime is 2001012220003. The next prime is 2001012220057. The reversal of 2001012220012 is 2100222101002.

It is a happy number.

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 = 2001012219974 and 2001012220001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3979462 + ... + 4454002.

It is an arithmetic number, because the mean of its divisors is an integer number (79593506034).

Almost surely, 2^{2001012220012} is an apocalyptic number.

It is an amenable number.

2001012220012 is a deficient number, since it is larger than the sum of its proper divisors (1819476069620).

2001012220012 is a wasteful number, since it uses less digits than its factorization.

2001012220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475618 (or 475616 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001012220012 its reverse (2100222101002), we get a palindrome (4101234321014).

The spelling of 2001012220012 in words is "two trillion, one billion, twelve million, two hundred twenty thousand, twelve".