22319021 has 8 divisors (see below), whose sum is σ = 23077824. Its totient is φ = 21571200.

The previous prime is 22318997. The next prime is 22319057. The reversal of 22319021 is 12091322.

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 22319021 - 2⁶ = 22318957 is a prime.

It is a super-3 number, since 3×22319021³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22318984 and 22319002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22319071) 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, 1496 + ... + 6846.

It is an arithmetic number, because the mean of its divisors is an integer number (2884728).

Almost surely, 2^22319021 is an apocalyptic number.

It is an amenable number.

22319021 is a deficient number, since it is larger than the sum of its proper divisors (758803).

22319021 is an equidigital number, since it uses as much as digits as its factorization.

22319021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22319021 is about 4724.3011123340. The cubic root of 22319021 is about 281.5518467306.

The spelling of 22319021 in words is "twenty-two million, three hundred nineteen thousand, twenty-one".