20121303222 has 24 divisors (see below), whose sum is σ = 44774432976. Its totient is φ = 6525827856.

The previous prime is 20121303197. The next prime is 20121303263. The reversal of 20121303222 is 22230312102.

20121303222 is a `hidden beast` number, since 20 + 121 + 303 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20121303195 and 20121303204.

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 11 ways as a sum of consecutive naturals, for example, 15105418 + ... + 15106749.

It is an arithmetic number, because the mean of its divisors is an integer number (1865601374).

Almost surely, 2^20121303222 is an apocalyptic number.

20121303222 is an abundant number, since it is smaller than the sum of its proper divisors (24653129754).

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

20121303222 is a wasteful number, since it uses less digits than its factorization.

20121303222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30212212 (or 30212209 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20121303222 its reverse (22230312102), we get a palindrome (42351615324).

The spelling of 20121303222 in words is "twenty billion, one hundred twenty-one million, three hundred three thousand, two hundred twenty-two".