2021022001 has 16 divisors (see below), whose sum is σ = 2142720000. Its totient is φ = 1900913616.

The previous prime is 2021021987. The next prime is 2021022007. The reversal of 2021022001 is 1002201202.

It is a cyclic number.

It is not a de Polignac number, because 2021022001 - 2¹¹ = 2021019953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021022007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2810520 + ... + 2811238.

It is an arithmetic number, because the mean of its divisors is an integer number (133920000).

Almost surely, 2^2021022001 is an apocalyptic number.

It is an amenable number.

2021022001 is a deficient number, since it is larger than the sum of its proper divisors (121697999).

2021022001 is a wasteful number, since it uses less digits than its factorization.

2021022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

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

The square root of 2021022001 is about 44955.7782826635. The cubic root of 2021022001 is about 1264.3200167879.

Adding to 2021022001 its reverse (1002201202), we get a palindrome (3023223203).

The spelling of 2021022001 in words is "two billion, twenty-one million, twenty-two thousand, one".