220012020 has 144 divisors (see below), whose sum is σ = 733299840. Its totient is φ = 53146368.

The previous prime is 220012007. The next prime is 220012049. The reversal of 220012020 is 20210022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 220011993 and 220012011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77262 + ... + 80058.

It is an arithmetic number, because the mean of its divisors is an integer number (5092360).

Almost surely, 2^220012020 is an apocalyptic number.

220012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366649920).

220012020 is an abundant number, since it is smaller than the sum of its proper divisors (513287820).

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

220012020 is a wasteful number, since it uses less digits than its factorization.

220012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2849 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 220012020 is about 14832.8021627742. The cubic root of 220012020 is about 603.6920677924.

Adding to 220012020 its reverse (20210022), we get a palindrome (240222042).

The spelling of 220012020 in words is "two hundred twenty million, twelve thousand, twenty".