20021210201089 has 2 divisors, whose sum is σ = 20021210201090. Its totient is φ = 20021210201088.

The previous prime is 20021210201063. The next prime is 20021210201119. The reversal of 20021210201089 is 98010201212002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19549591506064 + 471618695025 = 4421492^2 + 686745^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021210201089 - 2¹¹ = 20021210199041 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021210201039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010605100544 + 10010605100545.

It is an arithmetic number, because the mean of its divisors is an integer number (10010605100545).

Almost surely, 2^{20021210201089} is an apocalyptic number.

It is an amenable number.

20021210201089 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021210201089 is an equidigital number, since it uses as much as digits as its factorization.

20021210201089 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 20021210201089 in words is "twenty trillion, twenty-one billion, two hundred ten million, two hundred one thousand, eighty-nine".