20202001020001 has 4 divisors (see below), whose sum is σ = 21265264231600. Its totient is φ = 19138737808404.

The previous prime is 20202001019911. The next prime is 20202001020067. The reversal of 20202001020001 is 10002010020202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20202001020001 - 2¹⁹ = 20202000495713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202001020001.

It is not an unprimeable number, because it can be changed into a prime (20202004020001) 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, 531631605771 + ... + 531631605808.

It is an arithmetic number, because the mean of its divisors is an integer number (5316316057900).

Almost surely, 2^{20202001020001} is an apocalyptic number.

It is an amenable number.

20202001020001 is a deficient number, since it is larger than the sum of its proper divisors (1063263211599).

20202001020001 is a wasteful number, since it uses less digits than its factorization.

20202001020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063263211598.

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

Adding to 20202001020001 its reverse (10002010020202), we get a palindrome (30204011040203).

The spelling of 20202001020001 in words is "twenty trillion, two hundred two billion, one million, twenty thousand, one".