20222231420 has 12 divisors (see below), whose sum is σ = 42466686024. Its totient is φ = 8088892560.

The previous prime is 20222231363. The next prime is 20222231453. The reversal of 20222231420 is 2413222202.

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: 1011111571 = 20222231420 / (2 + 0 + 2 + 2 + 2 + 2 + 3 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20222231392 and 20222231401.

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 3 ways as a sum of consecutive naturals, for example, 505555766 + ... + 505555805.

It is an arithmetic number, because the mean of its divisors is an integer number (3538890502).

Almost surely, 2^20222231420 is an apocalyptic number.

20222231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222231420 is an abundant number, since it is smaller than the sum of its proper divisors (22244454604).

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

20222231420 is a wasteful number, since it uses less digits than its factorization.

20222231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011111580 (or 1011111578 counting only the distinct ones).

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

Adding to 20222231420 its reverse (2413222202), we get a palindrome (22635453622).

The spelling of 20222231420 in words is "twenty billion, two hundred twenty-two million, two hundred thirty-one thousand, four hundred twenty".