22221420120 has 160 divisors (see below), whose sum is σ = 79082308800. Its totient is φ = 5577126912.

The previous prime is 22221420107. The next prime is 22221420127. The reversal of 22221420120 is 2102412222.

22221420120 is a `hidden beast` number, since 2 + 2 + 221 + 420 + 1 + 20 = 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 = 22221420093 and 22221420102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221420127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 146640 + ... + 256799.

It is an arithmetic number, because the mean of its divisors is an integer number (494264430).

Almost surely, 2^22221420120 is an apocalyptic number.

22221420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221420120 is an abundant number, since it is smaller than the sum of its proper divisors (56860888680).

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

22221420120 is a wasteful number, since it uses less digits than its factorization.

22221420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403479 (or 403466 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221420120 its reverse (2102412222), we get a palindrome (24323832342).

The spelling of 22221420120 in words is "twenty-two billion, two hundred twenty-one million, four hundred twenty thousand, one hundred twenty".