4222220420 has 24 divisors (see below), whose sum is σ = 9672723648. Its totient is φ = 1535352800.

The previous prime is 4222220417. The next prime is 4222220449. The reversal of 4222220420 is 240222224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4222220392 and 4222220401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9595736 + ... + 9596175.

It is an arithmetic number, because the mean of its divisors is an integer number (403030152).

Almost surely, 2^4222220420 is an apocalyptic number.

It is an amenable number.

4222220420 is an abundant number, since it is smaller than the sum of its proper divisors (5450503228).

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

4222220420 is a wasteful number, since it uses less digits than its factorization.

4222220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19191931 (or 19191929 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4222220420 is about 64978.6150975842. The cubic root of 4222220420 is about 1616.2689653160.

Adding to 4222220420 its reverse (240222224), we get a palindrome (4462442644).

It can be divided in two parts, 42222204 and 20, that added together give a palindrome (42222224).

The spelling of 4222220420 in words is "four billion, two hundred twenty-two million, two hundred twenty thousand, four hundred twenty".