20422201 has 4 divisors (see below), whose sum is σ = 20768400. Its totient is φ = 20076004.

The previous prime is 20422189. The next prime is 20422243. The reversal of 20422201 is 10222402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10222402 = 2 ⋅5111201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20422001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173011 + ... + 173128.

It is an arithmetic number, because the mean of its divisors is an integer number (5192100).

Almost surely, 2^20422201 is an apocalyptic number.

It is an amenable number.

20422201 is a deficient number, since it is larger than the sum of its proper divisors (346199).

20422201 is an equidigital number, since it uses as much as digits as its factorization.

20422201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346198.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20422201 is about 4519.0929399604. The cubic root of 20422201 is about 273.3385264067.

Adding to 20422201 its reverse (10222402), we get a palindrome (30644603).

The spelling of 20422201 in words is "twenty million, four hundred twenty-two thousand, two hundred one".