2001221202010 has 8 divisors (see below), whose sum is σ = 3602198163636. Its totient is φ = 800488480800.

The previous prime is 2001221201983. The next prime is 2001221202031. The reversal of 2001221202010 is 102021221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1935072962761 + 66148239249 = 1391069^2 + 257193^2 .

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

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, 100061060091 + ... + 100061060110.

Almost surely, 2^{2001221202010} is an apocalyptic number.

2001221202010 is a deficient number, since it is larger than the sum of its proper divisors (1600976961626).

2001221202010 is a wasteful number, since it uses less digits than its factorization.

2001221202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200122120208.

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

Adding to 2001221202010 its reverse (102021221002), we get a palindrome (2103242423012).

The spelling of 2001221202010 in words is "two trillion, one billion, two hundred twenty-one million, two hundred two thousand, ten".