12021321312230 has 16 divisors (see below), whose sum is σ = 22579177421664. Its totient is φ = 4599462067200.

The previous prime is 12021321312211. The next prime is 12021321312241. The reversal of 12021321312230 is 3221312312021.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 12021321312196 and 12021321312205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26133306971 + ... + 26133307430.

It is an arithmetic number, because the mean of its divisors is an integer number (1411198588854).

Almost surely, 2^{12021321312230} is an apocalyptic number.

12021321312230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021321312230 is a deficient number, since it is larger than the sum of its proper divisors (10557856109434).

12021321312230 is a wasteful number, since it uses less digits than its factorization.

12021321312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52266614431.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12021321312230 its reverse (3221312312021), we get a palindrome (15242633624251).

The spelling of 12021321312230 in words is "twelve trillion, twenty-one billion, three hundred twenty-one million, three hundred twelve thousand, two hundred thirty".