1230030030021 has 16 divisors (see below), whose sum is σ = 1766237593344. Its totient is φ = 756924145344.

The previous prime is 1230030030017. The next prime is 1230030030059. The reversal of 1230030030021 is 1200300300321.

It is not a de Polignac number, because 1230030030021 - 2² = 1230030030017 is a prime.

It is a super-2 number, since 2×1230030030021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230030030001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471915 + ... + 2150951.

It is an arithmetic number, because the mean of its divisors is an integer number (110389849584).

Almost surely, 2^{1230030030021} is an apocalyptic number.

It is an amenable number.

1230030030021 is a deficient number, since it is larger than the sum of its proper divisors (536207563323).

1230030030021 is a wasteful number, since it uses less digits than its factorization.

1230030030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725500.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 1230030030021 its reverse (1200300300321), we get a palindrome (2430330330342).

It can be divided in two parts, 12300300300 and 21, that added together give a palindrome (12300300321).

The spelling of 1230030030021 in words is "one trillion, two hundred thirty billion, thirty million, thirty thousand, twenty-one".