1012020321233 has 4 divisors (see below), whose sum is σ = 1017611593908. Its totient is φ = 1006429048560.

The previous prime is 1012020321197. The next prime is 1012020321239. The reversal of 1012020321233 is 3321230202101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58384090384 + 953636230849 = 241628^2 + 976543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012020321233 - 2²⁰ = 1012019272657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012020321239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2795636066 + ... + 2795636427.

It is an arithmetic number, because the mean of its divisors is an integer number (254402898477).

Almost surely, 2^{1012020321233} is an apocalyptic number.

It is an amenable number.

1012020321233 is a deficient number, since it is larger than the sum of its proper divisors (5591272675).

1012020321233 is an equidigital number, since it uses as much as digits as its factorization.

1012020321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591272674.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1012020321233 its reverse (3321230202101), we get a palindrome (4333250523334).

The spelling of 1012020321233 in words is "one trillion, twelve billion, twenty million, three hundred twenty-one thousand, two hundred thirty-three".