222420020 has 24 divisors (see below), whose sum is σ = 469954464. Its totient is φ = 88420896.

The previous prime is 222420019. The next prime is 222420031. The reversal of 222420020 is 20024222.

It is a junction number, because it is equal to n+sod(n) for n = 222419977 and 222420004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30854 + ... + 37373.

It is an arithmetic number, because the mean of its divisors is an integer number (19581436).

Almost surely, 2^222420020 is an apocalyptic number.

222420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222420020 is an abundant number, since it is smaller than the sum of its proper divisors (247534444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222420020 is a wasteful number, since it uses less digits than its factorization.

222420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68399 (or 68397 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 222420020 is about 14913.7527135192. The cubic root of 222420020 is about 605.8865221916.

Adding to 222420020 its reverse (20024222), we get a palindrome (242444242).

The spelling of 222420020 in words is "two hundred twenty-two million, four hundred twenty thousand, twenty".