20010001020202 has 4 divisors (see below), whose sum is σ = 30015001530306. Its totient is φ = 10005000510100.

The previous prime is 20010001020169. The next prime is 20010001020223. The reversal of 20010001020202 is 20202010001002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11460113907841 + 8549887112361 = 3385279^2 + 2924019^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002500255049 + ... + 5002500255052.

Almost surely, 2^{20010001020202} is an apocalyptic number.

20010001020202 is a deficient number, since it is larger than the sum of its proper divisors (10005000510104).

20010001020202 is a wasteful number, since it uses less digits than its factorization.

20010001020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005000510103.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20010001020202 its reverse (20202010001002), we get a palindrome (40212011021204).

The spelling of 20010001020202 in words is "twenty trillion, ten billion, one million, twenty thousand, two hundred two".