1314121461221 has 4 divisors (see below), whose sum is σ = 1314139788192. Its totient is φ = 1314103134252.

The previous prime is 1314121461209. The next prime is 1314121461239. The reversal of 1314121461221 is 1221641214131.

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 a de Polignac number, because none of the positive numbers 2^k-1314121461221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314121461241) 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, 9055505 + ... + 9199478.

It is an arithmetic number, because the mean of its divisors is an integer number (328534947048).

Almost surely, 2^{1314121461221} is an apocalyptic number.

It is an amenable number.

1314121461221 is a deficient number, since it is larger than the sum of its proper divisors (18326971).

1314121461221 is an equidigital number, since it uses as much as digits as its factorization.

1314121461221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18326970.

The product of its digits is 2304, while the sum is 29.

Adding to 1314121461221 its reverse (1221641214131), we get a palindrome (2535762675352).

The spelling of 1314121461221 in words is "one trillion, three hundred fourteen billion, one hundred twenty-one million, four hundred sixty-one thousand, two hundred twenty-one".