22130421 has 8 divisors (see below), whose sum is σ = 31060320. Its totient is φ = 13977072.

The previous prime is 22130411. The next prime is 22130431. The reversal of 22130421 is 12403122.

It is an interprime number because it is at equal distance from previous prime (22130411) and next prime (22130431).

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

It is not a de Polignac number, because 22130421 - 2⁷ = 22130293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22130421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22130401) 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, 194070 + ... + 194183.

It is an arithmetic number, because the mean of its divisors is an integer number (3882540).

Almost surely, 2^22130421 is an apocalyptic number.

It is an amenable number.

22130421 is a deficient number, since it is larger than the sum of its proper divisors (8929899).

22130421 is a wasteful number, since it uses less digits than its factorization.

22130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388275.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22130421 is about 4704.2981410621. The cubic root of 22130421 is about 280.7565466928.

Adding to 22130421 its reverse (12403122), we get a palindrome (34533543).

The spelling of 22130421 in words is "twenty-two million, one hundred thirty thousand, four hundred twenty-one".