1230213312021 has 16 divisors (see below), whose sum is σ = 1688817526848. Its totient is φ = 795986208000.

The previous prime is 1230213312019. The next prime is 1230213312043. The reversal of 1230213312021 is 1202133120321.

It is not a de Polignac number, because 1230213312021 - 2¹ = 1230213312019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230213312071) 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 15 ways as a sum of consecutive naturals, for example, 13774695 + ... + 13863716.

It is an arithmetic number, because the mean of its divisors is an integer number (105551095428).

Almost surely, 2^{1230213312021} is an apocalyptic number.

It is an amenable number.

1230213312021 is a deficient number, since it is larger than the sum of its proper divisors (458604214827).

1230213312021 is a wasteful number, since it uses less digits than its factorization.

1230213312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27638852.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1230213312021 its reverse (1202133120321), we get a palindrome (2432346432342).

The spelling of 1230213312021 in words is "one trillion, two hundred thirty billion, two hundred thirteen million, three hundred twelve thousand, twenty-one".