1214404044221 has 4 divisors (see below), whose sum is σ = 1285839576252. Its totient is φ = 1142968512192.

The previous prime is 1214404044181. The next prime is 1214404044257. The reversal of 1214404044221 is 1224404044121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359833219321 + 854570824900 = 599861^2 + 924430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214404044221 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 (1214404040221) 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, 35717765990 + ... + 35717766023.

It is an arithmetic number, because the mean of its divisors is an integer number (321459894063).

Almost surely, 2^{1214404044221} is an apocalyptic number.

It is an amenable number.

1214404044221 is a deficient number, since it is larger than the sum of its proper divisors (71435532031).

1214404044221 is an equidigital number, since it uses as much as digits as its factorization.

1214404044221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71435532030.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 1214404044221 its reverse (1224404044121), we get a palindrome (2438808088342).

The spelling of 1214404044221 in words is "one trillion, two hundred fourteen billion, four hundred four million, forty-four thousand, two hundred twenty-one".