4021220032 has 28 divisors (see below), whose sum is σ = 7981991656. Its totient is φ = 2010009600.

The previous prime is 4021220023. The next prime is 4021220033. The reversal of 4021220032 is 2300221204.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 4021219988 and 4021220015.

It is not an unprimeable number, because it can be changed into a prime (4021220033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272032 + ... + 286432.

Almost surely, 2^4021220032 is an apocalyptic number.

It is an amenable number.

4021220032 is a deficient number, since it is larger than the sum of its proper divisors (3960771624).

4021220032 is a wasteful number, since it uses less digits than its factorization.

4021220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18776 (or 18766 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4021220032 is about 63413.0903836109. The cubic root of 4021220032 is about 1590.2031611503.

Adding to 4021220032 its reverse (2300221204), we get a palindrome (6321441236).

The spelling of 4021220032 in words is "four billion, twenty-one million, two hundred twenty thousand, thirty-two".