1021604332033 has 4 divisors (see below), whose sum is σ = 1022288596308. Its totient is φ = 1020920067760.

The previous prime is 1021604331991. The next prime is 1021604332051. The reversal of 1021604332033 is 3302334061201.

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 385427405584 + 636176926449 = 620828^2 + 797607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021604332033 - 2¹³ = 1021604323841 is a prime.

It is a super-2 number, since 2×1021604332033² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021604331992 and 1021604332010.

It is not an unprimeable number, because it can be changed into a prime (1021604332733) 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, 342129898 + ... + 342132883.

It is an arithmetic number, because the mean of its divisors is an integer number (255572149077).

Almost surely, 2^{1021604332033} is an apocalyptic number.

It is an amenable number.

1021604332033 is a deficient number, since it is larger than the sum of its proper divisors (684264275).

1021604332033 is an equidigital number, since it uses as much as digits as its factorization.

1021604332033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684264274.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1021604332033 its reverse (3302334061201), we get a palindrome (4323938393234).

The spelling of 1021604332033 in words is "one trillion, twenty-one billion, six hundred four million, three hundred thirty-two thousand, thirty-three".