1022543204251 has 2 divisors, whose sum is σ = 1022543204252. Its totient is φ = 1022543204250.

The previous prime is 1022543204183. The next prime is 1022543204279. The reversal of 1022543204251 is 1524023452201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022543204251 - 2²¹ = 1022541107099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022543204051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511271602125 + 511271602126.

It is an arithmetic number, because the mean of its divisors is an integer number (511271602126).

Almost surely, 2^{1022543204251} is an apocalyptic number.

1022543204251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022543204251 is an equidigital number, since it uses as much as digits as its factorization.

1022543204251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1022543204251 its reverse (1524023452201), we get a palindrome (2546566656452).

The spelling of 1022543204251 in words is "one trillion, twenty-two billion, five hundred forty-three million, two hundred four thousand, two hundred fifty-one".