420220101 has 8 divisors (see below), whose sum is σ = 640335424. Its totient is φ = 240125760.

The previous prime is 420220079. The next prime is 420220139. The reversal of 420220101 is 101022024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420220101 - 2⁹ = 420219589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420220001) 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 in 7 ways as a sum of consecutive naturals, for example, 10005220 + ... + 10005261.

It is an arithmetic number, because the mean of its divisors is an integer number (80041928).

Almost surely, 2^420220101 is an apocalyptic number.

It is an amenable number.

420220101 is a deficient number, since it is larger than the sum of its proper divisors (220115323).

420220101 is a wasteful number, since it uses less digits than its factorization.

420220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010491.

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

The square root of 420220101 is about 20499.2707431264. The cubic root of 420220101 is about 749.0180339959.

Adding to 420220101 its reverse (101022024), we get a palindrome (521242125).

The spelling of 420220101 in words is "four hundred twenty million, two hundred twenty thousand, one hundred one".