22042433143421 has 4 divisors (see below), whose sum is σ = 22042608552732. Its totient is φ = 22042257734112.

The previous prime is 22042433143397. The next prime is 22042433143447. The reversal of 22042433143421 is 12434133424022.

It is a happy number.

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 12145991712100 + 9896441431321 = 3485110^2 + 3145861^2 .

It is a cyclic number.

It is not a de Polignac number, because 22042433143421 - 2³⁴ = 22025253274237 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 (22042433143121) 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, 87516026 + ... + 87767531.

It is an arithmetic number, because the mean of its divisors is an integer number (5510652138183).

Almost surely, 2^{22042433143421} is an apocalyptic number.

It is an amenable number.

22042433143421 is a deficient number, since it is larger than the sum of its proper divisors (175409311).

22042433143421 is a wasteful number, since it uses less digits than its factorization.

22042433143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175409310.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 22042433143421 its reverse (12434133424022), we get a palindrome (34476566567443).

The spelling of 22042433143421 in words is "twenty-two trillion, forty-two billion, four hundred thirty-three million, one hundred forty-three thousand, four hundred twenty-one".