12001321230 has 16 divisors (see below), whose sum is σ = 28803171024. Its totient is φ = 3200352320.

The previous prime is 12001321223. The next prime is 12001321249. The reversal of 12001321230 is 3212310021.

It is a super-2 number, since 2×12001321230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 200021991 + ... + 200022050.

It is an arithmetic number, because the mean of its divisors is an integer number (1800198189).

Almost surely, 2^12001321230 is an apocalyptic number.

12001321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12001321230 is an abundant number, since it is smaller than the sum of its proper divisors (16801849794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12001321230 is a wasteful number, since it uses less digits than its factorization.

12001321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400044051.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12001321230 its reverse (3212310021), we get a palindrome (15213631251).

The spelling of 12001321230 in words is "twelve billion, one million, three hundred twenty-one thousand, two hundred thirty".