220120427 has 2 divisors, whose sum is σ = 220120428. Its totient is φ = 220120426.

The previous prime is 220120409. The next prime is 220120447. The reversal of 220120427 is 724021022.

It is a happy number.

It is an a-pointer prime, because the next prime (220120447) can be obtained adding 220120427 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220120427 - 2⁸ = 220120171 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220120399 and 220120408.

It is not a weakly prime, because it can be changed into another prime (220120447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060213 + 110060214.

It is an arithmetic number, because the mean of its divisors is an integer number (110060214).

Almost surely, 2^220120427 is an apocalyptic number.

220120427 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120427 is an equidigital number, since it uses as much as digits as its factorization.

220120427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 220120427 is about 14836.4560121344. The cubic root of 220120427 is about 603.7912043458.

Adding to 220120427 its reverse (724021022), we get a palindrome (944141449).

The spelling of 220120427 in words is "two hundred twenty million, one hundred twenty thousand, four hundred twenty-seven".