1144324221421 has 16 divisors (see below), whose sum is σ = 1155122964864. Its totient is φ = 1133580610624.

The previous prime is 1144324221409. The next prime is 1144324221461. The reversal of 1144324221421 is 1241224234411.

It is a cyclic number.

It is not a de Polignac number, because 1144324221421 - 2⁵ = 1144324221389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144324221461) 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, 120870330 + ... + 120879796.

It is an arithmetic number, because the mean of its divisors is an integer number (72195185304).

Almost surely, 2^{1144324221421} is an apocalyptic number.

It is an amenable number.

1144324221421 is a deficient number, since it is larger than the sum of its proper divisors (10798743443).

1144324221421 is a wasteful number, since it uses less digits than its factorization.

1144324221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260.

The product of its digits is 12288, while the sum is 31.

Adding to 1144324221421 its reverse (1241224234411), we get a palindrome (2385548455832).

The spelling of 1144324221421 in words is "one trillion, one hundred forty-four billion, three hundred twenty-four million, two hundred twenty-one thousand, four hundred twenty-one".