1023202012321 has 2 divisors, whose sum is σ = 1023202012322. Its totient is φ = 1023202012320.

The previous prime is 1023202012309. The next prime is 1023202012361. The reversal of 1023202012321 is 1232102023201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 882660250000 + 140541762321 = 939500^2 + 374889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023202012321 - 2²³ = 1023193623713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023202012361) 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, 511601006160 + 511601006161.

It is an arithmetic number, because the mean of its divisors is an integer number (511601006161).

Almost surely, 2^{1023202012321} is an apocalyptic number.

It is an amenable number.

1023202012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023202012321 is an equidigital number, since it uses as much as digits as its factorization.

1023202012321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1023202012321 its reverse (1232102023201), we get a palindrome (2255304035522).

The spelling of 1023202012321 in words is "one trillion, twenty-three billion, two hundred two million, twelve thousand, three hundred twenty-one".