2001021010202 has 8 divisors (see below), whose sum is σ = 3001541684916. Its totient is φ = 1000507115232.

The previous prime is 2001021010189. The next prime is 2001021010207. The reversal of 2001021010202 is 2020101201002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1429940031601 + 571080978601 = 1195801^2 + 755699^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2001021010207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878393 + ... + 2184860.

Almost surely, 2^{2001021010202} is an apocalyptic number.

2001021010202 is a deficient number, since it is larger than the sum of its proper divisors (1000520674714).

2001021010202 is a wasteful number, since it uses less digits than its factorization.

2001021010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389872.

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

Adding to 2001021010202 its reverse (2020101201002), we get a palindrome (4021122211204).

The spelling of 2001021010202 in words is "two trillion, one billion, twenty-one million, ten thousand, two hundred two".