22220121020 has 24 divisors (see below), whose sum is σ = 46669715568. Its totient is φ = 8886627200.

The previous prime is 22220120953. The next prime is 22220121029. The reversal of 22220121020 is 2012102222.

It is a junction number, because it is equal to n+sod(n) for n = 22220120986 and 22220121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220121029) 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 7 ways as a sum of consecutive naturals, for example, 44240 + ... + 215400.

It is an arithmetic number, because the mean of its divisors is an integer number (1944571482).

Almost surely, 2^22220121020 is an apocalyptic number.

22220121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220121020 is an abundant number, since it is smaller than the sum of its proper divisors (24449594548).

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

22220121020 is a wasteful number, since it uses less digits than its factorization.

22220121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177661 (or 177659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22220121020 its reverse (2012102222), we get a palindrome (24232223242).

The spelling of 22220121020 in words is "twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, twenty".