2001212210 has 8 divisors (see below), whose sum is σ = 3602181996. Its totient is φ = 800484880.

The previous prime is 2001212203. The next prime is 2001212233. The reversal of 2001212210 is 122121002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1999788961 + 1423249 = 44719^2 + 1193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2001212191 and 2001212200.

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, 100060601 + ... + 100060620.

Almost surely, 2^2001212210 is an apocalyptic number.

2001212210 is a deficient number, since it is larger than the sum of its proper divisors (1600969786).

2001212210 is a wasteful number, since it uses less digits than its factorization.

2001212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200121228.

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

The square root of 2001212210 is about 44734.9104168098. The cubic root of 2001212210 is about 1260.1755466339.

Adding to 2001212210 its reverse (122121002), we get a palindrome (2123333212).

The spelling of 2001212210 in words is "two billion, one million, two hundred twelve thousand, two hundred ten".