1000233030221 has 4 divisors (see below), whose sum is σ = 1000854680700. Its totient is φ = 999611379744.

The previous prime is 1000233030169. The next prime is 1000233030287. The reversal of 1000233030221 is 1220303320001.

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 452914194121 + 547318836100 = 672989^2 + 739810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000233030221 - 2¹⁸ = 1000232768077 is a prime.

It is a super-2 number, since 2×1000233030221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000233030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000233030521) 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, 310822826 + ... + 310826043.

It is an arithmetic number, because the mean of its divisors is an integer number (250213670175).

Almost surely, 2^{1000233030221} is an apocalyptic number.

It is an amenable number.

1000233030221 is a deficient number, since it is larger than the sum of its proper divisors (621650479).

1000233030221 is an equidigital number, since it uses as much as digits as its factorization.

1000233030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621650478.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1000233030221 its reverse (1220303320001), we get a palindrome (2220536350222).

The spelling of 1000233030221 in words is "one trillion, two hundred thirty-three million, thirty thousand, two hundred twenty-one".