2001020220023 has 8 divisors (see below), whose sum is σ = 2224118529936. Its totient is φ = 1784786473600.

The previous prime is 2001020220007. The next prime is 2001020220029. The reversal of 2001020220023 is 3200220201002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001020220023 - 2⁴ = 2001020220007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001020220029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716140258 + ... + 1716141423.

It is an arithmetic number, because the mean of its divisors is an integer number (278014816242).

Almost surely, 2^{2001020220023} is an apocalyptic number.

2001020220023 is a deficient number, since it is larger than the sum of its proper divisors (223098309913).

2001020220023 is a wasteful number, since it uses less digits than its factorization.

2001020220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432281745.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 2001020220023 its reverse (3200220201002), we get a palindrome (5201240421025).

The spelling of 2001020220023 in words is "two trillion, one billion, twenty million, two hundred twenty thousand, twenty-three".