22122202421 has 8 divisors (see below), whose sum is σ = 24139516800. Its totient is φ = 20105922240.

The previous prime is 22122202373. The next prime is 22122202451. The reversal of 22122202421 is 12420222122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122202421 is a prime.

It is a super-2 number, since 2×22122202421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122202393 and 22122202402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122202451) 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, 213476 + ... + 299693.

It is an arithmetic number, because the mean of its divisors is an integer number (3017439600).

Almost surely, 2^22122202421 is an apocalyptic number.

It is an amenable number.

22122202421 is a deficient number, since it is larger than the sum of its proper divisors (2017314379).

22122202421 is a wasteful number, since it uses less digits than its factorization.

22122202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517099.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22122202421 its reverse (12420222122), we get a palindrome (34542424543).

The spelling of 22122202421 in words is "twenty-two billion, one hundred twenty-two million, two hundred two thousand, four hundred twenty-one".