2021200001 has 8 divisors (see below), whose sum is σ = 2082473064. Its totient is φ = 1960497280.

The previous prime is 2021199967. The next prime is 2021200007. The reversal of 2021200001 is 1000021202.

It can be written as a sum of positive squares in 4 ways, for example, as 592435600 + 1428764401 = 24340^2 + 37799^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021200001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2021200007) 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, 135386 + ... + 149571.

It is an arithmetic number, because the mean of its divisors is an integer number (260309133).

Almost surely, 2^2021200001 is an apocalyptic number.

It is an amenable number.

2021200001 is a deficient number, since it is larger than the sum of its proper divisors (61273063).

2021200001 is a wasteful number, since it uses less digits than its factorization.

2021200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285171.

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

The square root of 2021200001 is about 44957.7579623362. The cubic root of 2021200001 is about 1264.3571337112.

Adding to 2021200001 its reverse (1000021202), we get a palindrome (3021221203).

The spelling of 2021200001 in words is "two billion, twenty-one million, two hundred thousand, one".