1023201121 has 2 divisors, whose sum is σ = 1023201122. Its totient is φ = 1023201120.

The previous prime is 1023201119. The next prime is 1023201131. The reversal of 1023201121 is 1211023201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008761121 + 14440000 = 31761^2 + 3800^2 .

It is an emirp because it is prime and its reverse (1211023201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023201121 - 2¹ = 1023201119 is a prime.

Together with 1023201119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1023201131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511600560 + 511600561.

It is an arithmetic number, because the mean of its divisors is an integer number (511600561).

Almost surely, 2^1023201121 is an apocalyptic number.

It is an amenable number.

1023201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023201121 is an equidigital number, since it uses as much as digits as its factorization.

1023201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1023201121 is about 31987.5150801059. The cubic root of 1023201121 is about 1007.6746559757.

Adding to 1023201121 its reverse (1211023201), we get a palindrome (2234224322).

The spelling of 1023201121 in words is "one billion, twenty-three million, two hundred one thousand, one hundred twenty-one".