2001221233012 has 12 divisors (see below), whose sum is σ = 3510114694240. Its totient is φ = 998331320376.

The previous prime is 2001221233001. The next prime is 2001221233031. The reversal of 2001221233012 is 2103321221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569822058 + ... + 569825569.

Almost surely, 2^{2001221233012} is an apocalyptic number.

It is an amenable number.

2001221233012 is a deficient number, since it is larger than the sum of its proper divisors (1508893461228).

2001221233012 is a wasteful number, since it uses less digits than its factorization.

2001221233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139648070 (or 1139648068 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2001221233012 its reverse (2103321221002), we get a palindrome (4104542454014).

The spelling of 2001221233012 in words is "two trillion, one billion, two hundred twenty-one million, two hundred thirty-three thousand, twelve".