22144023021 has 8 divisors (see below), whose sum is σ = 29526054400. Its totient is φ = 14762336832.

The previous prime is 22144023019. The next prime is 22144023023. The reversal of 22144023021 is 12032044122.

It is an interprime number because it is at equal distance from previous prime (22144023019) and next prime (22144023023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22144023021 - 2¹ = 22144023019 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 (22144023023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187380 + ... + 281778.

It is an arithmetic number, because the mean of its divisors is an integer number (3690756800).

Almost surely, 2^22144023021 is an apocalyptic number.

It is an amenable number.

22144023021 is a deficient number, since it is larger than the sum of its proper divisors (7382031379).

22144023021 is an equidigital number, since it uses as much as digits as its factorization.

22144023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172595.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22144023021 its reverse (12032044122), we get a palindrome (34176067143).

The spelling of 22144023021 in words is "twenty-two billion, one hundred forty-four million, twenty-three thousand, twenty-one".