20221111289 has 2 divisors, whose sum is σ = 20221111290. Its totient is φ = 20221111288.

The previous prime is 20221111283. The next prime is 20221111321. The reversal of 20221111289 is 98211112202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15691821289 + 4529290000 = 125267^2 + 67300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221111289 is a prime.

It is a super-3 number, since 3×20221111289³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20221111283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110555644 + 10110555645.

It is an arithmetic number, because the mean of its divisors is an integer number (10110555645).

Almost surely, 2^20221111289 is an apocalyptic number.

It is an amenable number.

20221111289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221111289 is an equidigital number, since it uses as much as digits as its factorization.

20221111289 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 29.

The spelling of 20221111289 in words is "twenty billion, two hundred twenty-one million, one hundred eleven thousand, two hundred eighty-nine".