20243121022459 has 2 divisors, whose sum is σ = 20243121022460. Its totient is φ = 20243121022458.

The previous prime is 20243121022393. The next prime is 20243121022471. The reversal of 20243121022459 is 95422012134202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20243121022459 - 2²⁷ = 20242986804731 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243121023459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121560511229 + 10121560511230.

It is an arithmetic number, because the mean of its divisors is an integer number (10121560511230).

Almost surely, 2^{20243121022459} is an apocalyptic number.

20243121022459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243121022459 is an equidigital number, since it uses as much as digits as its factorization.

20243121022459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20243121022459 in words is "twenty trillion, two hundred forty-three billion, one hundred twenty-one million, twenty-two thousand, four hundred fifty-nine".