20223421220 has 12 divisors (see below), whose sum is σ = 42469184604. Its totient is φ = 8089368480.

The previous prime is 20223421219. The next prime is 20223421241. The reversal of 20223421220 is 2212432202.

It can be written as a sum of positive squares in 2 ways, for example, as 10115531776 + 10107889444 = 100576^2 + 100538^2 .

It is a super-3 number, since 3×20223421220³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1011171061 = 20223421220 / (2 + 0 + 2 + 2 + 3 + 4 + 2 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20223421192 and 20223421201.

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 3 ways as a sum of consecutive naturals, for example, 505585511 + ... + 505585550.

It is an arithmetic number, because the mean of its divisors is an integer number (3539098717).

Almost surely, 2^20223421220 is an apocalyptic number.

20223421220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223421220 is an abundant number, since it is smaller than the sum of its proper divisors (22245763384).

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

20223421220 is a wasteful number, since it uses less digits than its factorization.

20223421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011171070 (or 1011171068 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20223421220 its reverse (2212432202), we get a palindrome (22435853422).

The spelling of 20223421220 in words is "twenty billion, two hundred twenty-three million, four hundred twenty-one thousand, two hundred twenty".