20211333402289 has 2 divisors, whose sum is σ = 20211333402290. Its totient is φ = 20211333402288.

The previous prime is 20211333402283. The next prime is 20211333402307. The reversal of 20211333402289 is 98220433311202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13071840250000 + 7139493152289 = 3615500^2 + 2671983^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211333402289 - 2²⁹ = 20210796531377 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211333402283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105666701144 + 10105666701145.

It is an arithmetic number, because the mean of its divisors is an integer number (10105666701145).

Almost surely, 2^{20211333402289} is an apocalyptic number.

It is an amenable number.

20211333402289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211333402289 is an equidigital number, since it uses as much as digits as its factorization.

20211333402289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 20211333402289 in words is "twenty trillion, two hundred eleven billion, three hundred thirty-three million, four hundred two thousand, two hundred eighty-nine".