2122021001 has 8 divisors (see below), whose sum is σ = 2167947264. Its totient is φ = 2076127200.

The previous prime is 2122020991. The next prime is 2122021043. The reversal of 2122021001 is 1001202212.

It is a happy number.

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 2122021001 - 2¹⁸ = 2121758857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122021301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162101 + ... + 174701.

It is an arithmetic number, because the mean of its divisors is an integer number (270993408).

Almost surely, 2^2122021001 is an apocalyptic number.

It is an amenable number.

2122021001 is a deficient number, since it is larger than the sum of its proper divisors (45926263).

2122021001 is a wasteful number, since it uses less digits than its factorization.

2122021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2122021001 is about 46065.3991733492. The cubic root of 2122021001 is about 1285.0397421937.

Adding to 2122021001 its reverse (1001202212), we get a palindrome (3123223213).

The spelling of 2122021001 in words is "two billion, one hundred twenty-two million, twenty-one thousand, one".