1144312214221 has 4 divisors (see below), whose sum is σ = 1248340597344. Its totient is φ = 1040283831100.

The previous prime is 1144312214183. The next prime is 1144312214231. The reversal of 1144312214221 is 1224122134411.

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-1144312214221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1144312214221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144312214231) 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, 52014191545 + ... + 52014191566.

It is an arithmetic number, because the mean of its divisors is an integer number (312085149336).

Almost surely, 2^{1144312214221} is an apocalyptic number.

1144312214221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1144312214221 is a deficient number, since it is larger than the sum of its proper divisors (104028383123).

1144312214221 is a wasteful number, since it uses less digits than its factorization.

1144312214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104028383122.

The product of its digits is 3072, while the sum is 28.

Adding to 1144312214221 its reverse (1224122134411), we get a palindrome (2368434348632).

The spelling of 1144312214221 in words is "one trillion, one hundred forty-four billion, three hundred twelve million, two hundred fourteen thousand, two hundred twenty-one".