1030123221 has 16 divisors (see below), whose sum is σ = 1398209280. Its totient is φ = 674472960.

The previous prime is 1030123201. The next prime is 1030123231. The reversal of 1030123221 is 1223210301.

It is not a de Polignac number, because 1030123221 - 2¹⁷ = 1029992149 is a prime.

It is a super-2 number, since 2×1030123221² = 2122307700886829682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1030123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030123201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42501 + ... + 62181.

It is an arithmetic number, because the mean of its divisors is an integer number (87388080).

Almost surely, 2^1030123221 is an apocalyptic number.

It is an amenable number.

1030123221 is a deficient number, since it is larger than the sum of its proper divisors (368086059).

1030123221 is a wasteful number, since it uses less digits than its factorization.

1030123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19996.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1030123221 is about 32095.5327265338. The cubic root of 1030123221 is about 1009.9419046413.

Adding to 1030123221 its reverse (1223210301), we get a palindrome (2253333522).

It can be divided in two parts, 1030 and 123221, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 1030123221 in words is "one billion, thirty million, one hundred twenty-three thousand, two hundred twenty-one".