1022121543523 has 2 divisors, whose sum is σ = 1022121543524. Its totient is φ = 1022121543522.

The previous prime is 1022121543491. The next prime is 1022121543529. The reversal of 1022121543523 is 3253451212201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022121543523 - 2⁵ = 1022121543491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022121543529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511060771761 + 511060771762.

It is an arithmetic number, because the mean of its divisors is an integer number (511060771762).

Almost surely, 2^{1022121543523} is an apocalyptic number.

1022121543523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022121543523 is an equidigital number, since it uses as much as digits as its factorization.

1022121543523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1022121543523 its reverse (3253451212201), we get a palindrome (4275572755724).

The spelling of 1022121543523 in words is "one trillion, twenty-two billion, one hundred twenty-one million, five hundred forty-three thousand, five hundred twenty-three".