20022427 has 2 divisors, whose sum is σ = 20022428. Its totient is φ = 20022426.

The previous prime is 20022407. The next prime is 20022437. The reversal of 20022427 is 72422002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20022427 - 2²³ = 11633819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20022407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011213 + 10011214.

It is an arithmetic number, because the mean of its divisors is an integer number (10011214).

Almost surely, 2^20022427 is an apocalyptic number.

20022427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022427 is an equidigital number, since it uses as much as digits as its factorization.

20022427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 20022427 is about 4474.6426672976. The cubic root of 20022427 is about 271.5431841654.

Adding to 20022427 its reverse (72422002), we get a palindrome (92444429).

It can be divided in two parts, 20022 and 427, that added together give a square (20449 = 143²).

The spelling of 20022427 in words is "twenty million, twenty-two thousand, four hundred twenty-seven".