4002220020 has 24 divisors (see below), whose sum is σ = 11206216224. Its totient is φ = 1067258656.

The previous prime is 4002220007. The next prime is 4002220039. The reversal of 4002220020 is 200222004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 4002219978 and 4002220005.

It is a congruent number.

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, 33351774 + ... + 33351893.

It is an arithmetic number, because the mean of its divisors is an integer number (466925676).

Almost surely, 2^4002220020 is an apocalyptic number.

It is an amenable number.

4002220020 is an abundant number, since it is smaller than the sum of its proper divisors (7203996204).

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

4002220020 is a wasteful number, since it uses less digits than its factorization.

4002220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66703679 (or 66703677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4002220020 is about 63263.1015679756. The cubic root of 4002220020 is about 1587.6946694954.

Adding to 4002220020 its reverse (200222004), we get a palindrome (4202442024).

The spelling of 4002220020 in words is "four billion, two million, two hundred twenty thousand, twenty".