1030103001221 has 10 divisors (see below), whose sum is σ = 1201715332422. Its totient is φ = 882945427560.

The previous prime is 1030103001211. The next prime is 1030103001311. The reversal of 1030103001221 is 1221003010301.

It can be written as a sum of positive squares in only one way, i.e., 1022749938721 + 7353062500 = 1011311^2 + 85750^2 .

It is not a de Polignac number, because 1030103001221 - 2¹⁰ = 1030103000197 is a prime.

It is a super-2 number, since 2×1030103001221² (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 = 1030103001196 and 1030103001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030103001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 214513010 + ... + 214517811.

Almost surely, 2^{1030103001221} is an apocalyptic number.

It is an amenable number.

1030103001221 is a deficient number, since it is larger than the sum of its proper divisors (171612331201).

1030103001221 is an frugal number, since it uses more digits than its factorization.

1030103001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429030849 (or 429030828 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1030103001221 its reverse (1221003010301), we get a palindrome (2251106011522).

The spelling of 1030103001221 in words is "one trillion, thirty billion, one hundred three million, one thousand, two hundred twenty-one".