2001220412 has 24 divisors (see below), whose sum is σ = 3562865712. Its totient is φ = 983289600.

The previous prime is 2001220393. The next prime is 2001220421. The reversal of 2001220412 is 2140221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311828 + ... + 318180.

It is an arithmetic number, because the mean of its divisors is an integer number (148452738).

Almost surely, 2^2001220412 is an apocalyptic number.

It is an amenable number.

2001220412 is a deficient number, since it is larger than the sum of its proper divisors (1561645300).

2001220412 is a wasteful number, since it uses less digits than its factorization.

2001220412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709 (or 7707 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2001220412 is about 44735.0020900860. The cubic root of 2001220412 is about 1260.1772682480.

Adding to 2001220412 its reverse (2140221002), we get a palindrome (4141441414).

The spelling of 2001220412 in words is "two billion, one million, two hundred twenty thousand, four hundred twelve".