22120130221 has 12 divisors (see below), whose sum is σ = 26020704060. Its totient is φ = 18747072960.

The previous prime is 22120130099. The next prime is 22120130233. The reversal of 22120130221 is 12203102122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6026416900 + 16093713321 = 77630^2 + 126861^2 .

It is not a de Polignac number, because 22120130221 - 2⁷ = 22120130093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120130195 and 22120130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120130251) by changing a digit.

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, 2531770 + ... + 2540491.

It is an arithmetic number, because the mean of its divisors is an integer number (2168392005).

Almost surely, 2^22120130221 is an apocalyptic number.

It is an amenable number.

22120130221 is a deficient number, since it is larger than the sum of its proper divisors (3900573839).

22120130221 is an equidigital number, since it uses as much as digits as its factorization.

22120130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072364 (or 5072357 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22120130221 its reverse (12203102122), we get a palindrome (34323232343).

The spelling of 22120130221 in words is "twenty-two billion, one hundred twenty million, one hundred thirty thousand, two hundred twenty-one".