22294247021 has 8 divisors (see below), whose sum is σ = 22362139800. Its totient is φ = 22226409280.

The previous prime is 22294246991. The next prime is 22294247039. The reversal of 22294247021 is 12074249222.

It can be written as a sum of positive squares in 4 ways, for example, as 1149888100 + 21144358921 = 33910^2 + 145411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22294247021 - 2³⁴ = 5114377837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22294247071) 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 7 ways as a sum of consecutive naturals, for example, 885791 + ... + 910611.

It is an arithmetic number, because the mean of its divisors is an integer number (2795267475).

Almost surely, 2^22294247021 is an apocalyptic number.

It is an amenable number.

22294247021 is a deficient number, since it is larger than the sum of its proper divisors (67892779).

22294247021 is a wasteful number, since it uses less digits than its factorization.

22294247021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27519.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 22294247021 in words is "twenty-two billion, two hundred ninety-four million, two hundred forty-seven thousand, twenty-one".