22230025521 has 32 divisors (see below), whose sum is σ = 32831225856. Its totient is φ = 13266288000.

The previous prime is 22230025453. The next prime is 22230025523. The reversal of 22230025521 is 12552003222.

It is not a de Polignac number, because 22230025521 - 2³³ = 13640090929 is a prime.

It is a super-2 number, since 2×22230025521² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22230025491 and 22230025500.

It is not an unprimeable number, because it can be changed into a prime (22230025523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2002416 + ... + 2013486.

It is an arithmetic number, because the mean of its divisors is an integer number (1025975808).

Almost surely, 2^22230025521 is an apocalyptic number.

It is an amenable number.

22230025521 is a deficient number, since it is larger than the sum of its proper divisors (10601200335).

22230025521 is a wasteful number, since it uses less digits than its factorization.

22230025521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12013.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 22230025521 its reverse (12552003222), we get a palindrome (34782028743).

The spelling of 22230025521 in words is "twenty-two billion, two hundred thirty million, twenty-five thousand, five hundred twenty-one".