2112021001 has 2 divisors, whose sum is σ = 2112021002. Its totient is φ = 2112021000.

The previous prime is 2112020983. The next prime is 2112021031. The reversal of 2112021001 is 1001202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099254025 + 1012766976 = 33155^2 + 31824^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112021001 - 2⁵ = 2112020969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056010500 + 1056010501.

It is an arithmetic number, because the mean of its divisors is an integer number (1056010501).

Almost surely, 2^2112021001 is an apocalyptic number.

It is an amenable number.

2112021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112021001 is an equidigital number, since it uses as much as digits as its factorization.

2112021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2112021001 is about 45956.7296595395. The cubic root of 2112021001 is about 1283.0179845997.

Adding to 2112021001 its reverse (1001202112), we get a palindrome (3113223113).

The spelling of 2112021001 in words is "two billion, one hundred twelve million, twenty-one thousand, one".