1221030123003 has 24 divisors (see below), whose sum is σ = 1829115324400. Its totient is φ = 813983344128.

The previous prime is 1221030122987. The next prime is 1221030123007. The reversal of 1221030123003 is 3003210301221.

1221030123003 is a `hidden beast` number, since 122 + 10 + 301 + 230 + 0 + 3 = 666.

It is not a de Polignac number, because 1221030123003 - 2⁴ = 1221030122987 is a prime.

It is a super-2 number, since 2×1221030123003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221030123007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5947083 + ... + 6148971.

Almost surely, 2^{1221030123003} is an apocalyptic number.

1221030123003 is a deficient number, since it is larger than the sum of its proper divisors (608085201397).

1221030123003 is an equidigital number, since it uses as much as digits as its factorization.

1221030123003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226793 (or 226781 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1221030123003 its reverse (3003210301221), we get a palindrome (4224240424224).

The spelling of 1221030123003 in words is "one trillion, two hundred twenty-one billion, thirty million, one hundred twenty-three thousand, three".