2021212001089 has 2 divisors, whose sum is σ = 2021212001090. Its totient is φ = 2021212001088.

The previous prime is 2021212001071. The next prime is 2021212001141. The reversal of 2021212001089 is 9801002121202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2019857761089 + 1354240000 = 1421217^2 + 36800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021212001089 - 2²⁵ = 2021178446657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021212001189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010606000544 + 1010606000545.

It is an arithmetic number, because the mean of its divisors is an integer number (1010606000545).

Almost surely, 2^{2021212001089} is an apocalyptic number.

It is an amenable number.

2021212001089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021212001089 is an equidigital number, since it uses as much as digits as its factorization.

2021212001089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 2021212001089 in words is "two trillion, twenty-one billion, two hundred twelve million, one thousand, eighty-nine".