22120401 has 8 divisors (see below), whose sum is σ = 29522880. Its totient is φ = 14732432.

The previous prime is 22120393. The next prime is 22120433. The reversal of 22120401 is 10402122.

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 22120401 - 2³ = 22120393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22120801) 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, 655 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (3690360).

Almost surely, 2^22120401 is an apocalyptic number.

It is an amenable number.

22120401 is a deficient number, since it is larger than the sum of its proper divisors (7402479).

22120401 is a wasteful number, since it uses less digits than its factorization.

22120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7255.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22120401 is about 4703.2330369651. The cubic root of 22120401 is about 280.7141675430.

Adding to 22120401 its reverse (10402122), we get a palindrome (32522523).

The spelling of 22120401 in words is "twenty-two million, one hundred twenty thousand, four hundred one".