20200021001 has 8 divisors (see below), whose sum is σ = 20634463584. Its totient is φ = 19770127840.

The previous prime is 20200020991. The next prime is 20200021003. The reversal of 20200021001 is 10012000202.

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 20200021001 - 2³⁴ = 3020151817 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 20200021001.

It is not an unprimeable number, because it can be changed into a prime (20200021003) 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, 1128380 + ... + 1146141.

It is an arithmetic number, because the mean of its divisors is an integer number (2579307948).

Almost surely, 2^20200021001 is an apocalyptic number.

It is an amenable number.

20200021001 is a deficient number, since it is larger than the sum of its proper divisors (434442583).

20200021001 is a wasteful number, since it uses less digits than its factorization.

20200021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274711.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20200021001 its reverse (10012000202), we get a palindrome (30212021203).

The spelling of 20200021001 in words is "twenty billion, two hundred million, twenty-one thousand, one".