1030221011221 has 4 divisors (see below), whose sum is σ = 1031853691744. Its totient is φ = 1028588330700.

The previous prime is 1030221011213. The next prime is 1030221011227. The reversal of 1030221011221 is 1221101220301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1030221011221 - 2³ = 1030221011213 is a prime.

It is a super-2 number, since 2×1030221011221² (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 = 1030221011195 and 1030221011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030221011227) 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, 816339315 + ... + 816340576.

It is an arithmetic number, because the mean of its divisors is an integer number (257963422936).

Almost surely, 2^{1030221011221} is an apocalyptic number.

It is an amenable number.

1030221011221 is a deficient number, since it is larger than the sum of its proper divisors (1632680523).

1030221011221 is an equidigital number, since it uses as much as digits as its factorization.

1030221011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632680522.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1030221011221 its reverse (1221101220301), we get a palindrome (2251322231522).

The spelling of 1030221011221 in words is "one trillion, thirty billion, two hundred twenty-one million, eleven thousand, two hundred twenty-one".