1202233121 has 2 divisors, whose sum is σ = 1202233122. Its totient is φ = 1202233120.

The previous prime is 1202233117. The next prime is 1202233157. The reversal of 1202233121 is 1213322021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 705433600 + 496799521 = 26560^2 + 22289^2 .

It is an emirp because it is prime and its reverse (1213322021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202233121 - 2² = 1202233117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202233121.

It is not a weakly prime, because it can be changed into another prime (1202230121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601116560 + 601116561.

It is an arithmetic number, because the mean of its divisors is an integer number (601116561).

Almost surely, 2^1202233121 is an apocalyptic number.

It is an amenable number.

1202233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202233121 is an equidigital number, since it uses as much as digits as its factorization.

1202233121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1202233121 is about 34673.2334950174. The cubic root of 1202233121 is about 1063.3173399214.

Adding to 1202233121 its reverse (1213322021), we get a palindrome (2415555142).

Subtracting 1202233121 from its reverse (1213322021), we obtain a square (11088900 = 3330²).

The spelling of 1202233121 in words is "one billion, two hundred two million, two hundred thirty-three thousand, one hundred twenty-one".