22240332421 has 8 divisors (see below), whose sum is σ = 22397750784. Its totient is φ = 22083341280.

The previous prime is 22240332407. The next prime is 22240332463. The reversal of 22240332421 is 12423304222.

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

It is a cyclic number.

It is not a de Polignac number, because 22240332421 - 2¹¹ = 22240330373 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 (22240332481) 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, 1960 + ... + 210913.

It is an arithmetic number, because the mean of its divisors is an integer number (2799718848).

Almost surely, 2^22240332421 is an apocalyptic number.

It is an amenable number.

22240332421 is a deficient number, since it is larger than the sum of its proper divisors (157418363).

22240332421 is a wasteful number, since it uses less digits than its factorization.

22240332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213611.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 22240332421 its reverse (12423304222), we get a palindrome (34663636643).

The spelling of 22240332421 in words is "twenty-two billion, two hundred forty million, three hundred thirty-two thousand, four hundred twenty-one".