1212230101321 has 4 divisors (see below), whose sum is σ = 1215606787200. Its totient is φ = 1208853415444.

The previous prime is 1212230101297. The next prime is 1212230101343. The reversal of 1212230101321 is 1231010322121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212230101321 - 2⁷ = 1212230101193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212230105321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688342401 + ... + 1688343118.

It is an arithmetic number, because the mean of its divisors is an integer number (303901696800).

Almost surely, 2^{1212230101321} is an apocalyptic number.

It is an amenable number.

1212230101321 is a deficient number, since it is larger than the sum of its proper divisors (3376685879).

1212230101321 is an equidigital number, since it uses as much as digits as its factorization.

1212230101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376685878.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1212230101321 its reverse (1231010322121), we get a palindrome (2443240423442).

The spelling of 1212230101321 in words is "one trillion, two hundred twelve billion, two hundred thirty million, one hundred one thousand, three hundred twenty-one".