22220115724 has 24 divisors (see below), whose sum is σ = 40885625088. Its totient is φ = 10545883920.

The previous prime is 22220115721. The next prime is 22220115733. The reversal of 22220115724 is 42751102222.

It is a junction number, because it is equal to n+sod(n) for n = 22220115692 and 22220115701.

It is not an unprimeable number, because it can be changed into a prime (22220115721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909792 + ... + 933895.

It is an arithmetic number, because the mean of its divisors is an integer number (1703567712).

Almost surely, 2^22220115724 is an apocalyptic number.

It is an amenable number.

22220115724 is a deficient number, since it is larger than the sum of its proper divisors (18665509364).

22220115724 is a wasteful number, since it uses less digits than its factorization.

22220115724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843845 (or 1843843 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 22220115724 its reverse (42751102222), we get a palindrome (64971217946).

The spelling of 22220115724 in words is "twenty-two billion, two hundred twenty million, one hundred fifteen thousand, seven hundred twenty-four".