20020312220 has 48 divisors (see below), whose sum is σ = 42863784768. Its totient is φ = 7851916800.

The previous prime is 20020312219. The next prime is 20020312231. The reversal of 20020312220 is 2221302002.

It is a junction number, because it is equal to n+sod(n) for n = 20020312195 and 20020312204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1903817 + ... + 1914303.

It is an arithmetic number, because the mean of its divisors is an integer number (892995516).

Almost surely, 2^20020312220 is an apocalyptic number.

20020312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020312220 is an abundant number, since it is smaller than the sum of its proper divisors (22843472548).

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

20020312220 is a wasteful number, since it uses less digits than its factorization.

20020312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12350 (or 12348 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20020312220 its reverse (2221302002), we get a palindrome (22241614222).

The spelling of 20020312220 in words is "twenty billion, twenty million, three hundred twelve thousand, two hundred twenty".