144222021421 has 4 divisors (see below), whose sum is σ = 144444930912. Its totient is φ = 143999111932.

The previous prime is 144222021373. The next prime is 144222021431. The reversal of 144222021421 is 124120222441.

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 144222021421 - 2²³ = 144213632813 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 (144222021431) 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, 111453775 + ... + 111455068.

It is an arithmetic number, because the mean of its divisors is an integer number (36111232728).

Almost surely, 2^144222021421 is an apocalyptic number.

It is an amenable number.

144222021421 is a deficient number, since it is larger than the sum of its proper divisors (222909491).

144222021421 is an equidigital number, since it uses as much as digits as its factorization.

144222021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222909490.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 144222021421 its reverse (124120222441), we get a palindrome (268342243862).

It can be divided in two parts, 1442220 and 21421, that added together give a palindrome (1463641).

The spelling of 144222021421 in words is "one hundred forty-four billion, two hundred twenty-two million, twenty-one thousand, four hundred twenty-one".