20001001021202 has 16 divisors (see below), whose sum is σ = 30303271969152. Its totient is φ = 9899977632480.

The previous prime is 20001001021201. The next prime is 20001001021271. The reversal of 20001001021202 is 20212010010002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20001001021201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16220699 + ... + 17410142.

It is an arithmetic number, because the mean of its divisors is an integer number (1893954498072).

Almost surely, 2^{20001001021202} is an apocalyptic number.

20001001021202 is a deficient number, since it is larger than the sum of its proper divisors (10302270947950).

20001001021202 is a wasteful number, since it uses less digits than its factorization.

20001001021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33633833.

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

Adding to 20001001021202 its reverse (20212010010002), we get a palindrome (40213011031204).

The spelling of 20001001021202 in words is "twenty trillion, one billion, one million, twenty-one thousand, two hundred two".