22312301220 has 72 divisors (see below), whose sum is σ = 73833439680. Its totient is φ = 5409042240.

The previous prime is 22312301203. The next prime is 22312301227. The reversal of 22312301220 is 2210321322.

It is a super-3 number, since 3×22312301220³ (a number of 32 digits) contains 333 as substring.

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 = 22312301193 and 22312301202.

It is not an unprimeable number, because it can be changed into a prime (22312301227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5632440 + ... + 5636399.

It is an arithmetic number, because the mean of its divisors is an integer number (1025464440).

Almost surely, 2^22312301220 is an apocalyptic number.

22312301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22312301220 is an abundant number, since it is smaller than the sum of its proper divisors (51521138460).

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

22312301220 is a wasteful number, since it uses less digits than its factorization.

22312301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268865 (or 11268860 counting only the distinct ones).

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

Adding to 22312301220 its reverse (2210321322), we get a palindrome (24522622542).

The spelling of 22312301220 in words is "twenty-two billion, three hundred twelve million, three hundred one thousand, two hundred twenty".