2284543249921 has 2 divisors, whose sum is σ = 2284543249922.
Its totient is φ = 2284543249920.
The previous prime is 2284543249853. The next prime is 2284543249943. The reversal of 2284543249921 is 1299423454822.
It can be divided in two parts, 2284543 and 249921, that added together give a square (2534464 = 15922).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2097387511696 + 187155738225 = 1448236^2 + 432615^2
It is a cyclic number.
It is not a de Polignac number, because 2284543249921 - 223 = 2284534861313 is a prime.
It is not a weakly prime, because it can be changed into another prime (2284543249621) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1142271624960 + 1142271624961.
It is an arithmetic number, because the mean of its divisors is an integer number (1142271624961).
Almost surely, 22284543249921 is an apocalyptic number.
It is an amenable number.
2284543249921 is a deficient number, since it is larger than the sum of its proper divisors (1).
2284543249921 is an equidigital number, since it uses as much as digits as its factorization.
2284543249921 is an evil number, because the sum of its binary digits is even.
The product of its digits is 9953280, while the sum is 55.
The spelling of 2284543249921 in words is "two trillion, two hundred eighty-four billion, five hundred forty-three million, two hundred forty-nine thousand, nine hundred twenty-one".