22220030013521 has 16 divisors (see below), whose sum is σ = 22516491792000. Its totient is φ = 21926167769088.

The previous prime is 22220030013421. The next prime is 22220030013553. The reversal of 22220030013521 is 12531003002222.

It is a cyclic number.

It is not a de Polignac number, because 22220030013521 - 2¹⁰ = 22220030012497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220030013581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10763126 + ... + 12660368.

It is an arithmetic number, because the mean of its divisors is an integer number (1407280737000).

Almost surely, 2^{22220030013521} is an apocalyptic number.

It is an amenable number.

22220030013521 is a deficient number, since it is larger than the sum of its proper divisors (296461778479).

22220030013521 is a wasteful number, since it uses less digits than its factorization.

22220030013521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897928.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 22220030013521 its reverse (12531003002222), we get a palindrome (34751033015743).

The spelling of 22220030013521 in words is "twenty-two trillion, two hundred twenty billion, thirty million, thirteen thousand, five hundred twenty-one".