202120220089 has 2 divisors, whose sum is σ = 202120220090. Its totient is φ = 202120220088.

The previous prime is 202120220077. The next prime is 202120220129. The reversal of 202120220089 is 980022021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169678086400 + 32442133689 = 411920^2 + 180117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202120220089 is a prime.

It is not a weakly prime, because it can be changed into another prime (202120220009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060110044 + 101060110045.

It is an arithmetic number, because the mean of its divisors is an integer number (101060110045).

Almost surely, 2^202120220089 is an apocalyptic number.

It is an amenable number.

202120220089 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120220089 is an equidigital number, since it uses as much as digits as its factorization.

202120220089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 202120220089 in words is "two hundred two billion, one hundred twenty million, two hundred twenty thousand, eighty-nine".