220220221020 has 24 divisors (see below), whose sum is σ = 616616619024. Its totient is φ = 58725392256.

The previous prime is 220220220989. The next prime is 220220221051. The reversal of 220220221020 is 20122022022.

220220221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220220220989) and next prime (220220221051).

It is a super-3 number, since 3×220220221020³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1835168449 + ... + 1835168568.

It is an arithmetic number, because the mean of its divisors is an integer number (25692359126).

Almost surely, 2^220220221020 is an apocalyptic number.

220220221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220220221020 is an abundant number, since it is smaller than the sum of its proper divisors (396396398004).

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

220220221020 is a wasteful number, since it uses less digits than its factorization.

220220221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670337029 (or 3670337027 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 220220221020 its reverse (20122022022), we get a palindrome (240342243042).

It can be divided in two parts, 2202202 and 21020, that added together give a palindrome (2223222).

The spelling of 220220221020 in words is "two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, twenty".