1321212012230 has 32 divisors (see below), whose sum is σ = 2678069634048. Its totient is φ = 464942642400.

The previous prime is 1321212012223. The next prime is 1321212012233. The reversal of 1321212012230 is 322102121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321212012233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193722692 + ... + 193729511.

It is an arithmetic number, because the mean of its divisors is an integer number (83689676064).

Almost surely, 2^{1321212012230} is an apocalyptic number.

1321212012230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321212012230 is an abundant number, since it is smaller than the sum of its proper divisors (1356857621818).

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

1321212012230 is a wasteful number, since it uses less digits than its factorization.

1321212012230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387452252.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321212012230 its reverse (322102121231), we get a palindrome (1643314133461).

The spelling of 1321212012230 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, twelve thousand, two hundred thirty".