2001012212 has 24 divisors (see below), whose sum is σ = 3518592000. Its totient is φ = 995713056.

The previous prime is 2001012179. The next prime is 2001012229. The reversal of 2001012212 is 2122101002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001012193 and 2001012202.

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, 892589 + ... + 894827.

It is an arithmetic number, because the mean of its divisors is an integer number (146608000).

Almost surely, 2^2001012212 is an apocalyptic number.

It is an amenable number.

2001012212 is a deficient number, since it is larger than the sum of its proper divisors (1517579788).

2001012212 is a wasteful number, since it uses less digits than its factorization.

2001012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215 (or 3213 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001012212 is about 44732.6749926717. The cubic root of 2001012212 is about 1260.1335652481.

Adding to 2001012212 its reverse (2122101002), we get a palindrome (4123113214).

The spelling of 2001012212 in words is "two billion, one million, twelve thousand, two hundred twelve".