1030233111221 has 4 divisors (see below), whose sum is σ = 1030264294572. Its totient is φ = 1030201927872.

The previous prime is 1030233111211. The next prime is 1030233111233. The reversal of 1030233111221 is 1221113320301.

It is a happy number.

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 537970906225 + 492262204996 = 733465^2 + 701614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030233111221 - 2¹⁴ = 1030233094837 is a prime.

It is a super-2 number, since 2×1030233111221² (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 = 1030233111193 and 1030233111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030233111211) 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, 15542066 + ... + 15608211.

It is an arithmetic number, because the mean of its divisors is an integer number (257566073643).

Almost surely, 2^{1030233111221} is an apocalyptic number.

It is an amenable number.

1030233111221 is a deficient number, since it is larger than the sum of its proper divisors (31183351).

1030233111221 is an equidigital number, since it uses as much as digits as its factorization.

1030233111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31183350.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1030233111221 its reverse (1221113320301), we get a palindrome (2251346431522).

The spelling of 1030233111221 in words is "one trillion, thirty billion, two hundred thirty-three million, one hundred eleven thousand, two hundred twenty-one".