22261354521 has 16 divisors (see below), whose sum is σ = 34562104704. Its totient is φ = 12480758784.

The previous prime is 22261354513. The next prime is 22261354523. The reversal of 22261354521 is 12545316222.

It is a happy number.

It is not a de Polignac number, because 22261354521 - 2³ = 22261354513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22261354523) 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, 9999496 + ... + 10001721.

It is an arithmetic number, because the mean of its divisors is an integer number (2160131544).

Almost surely, 2^22261354521 is an apocalyptic number.

22261354521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22261354521 is a deficient number, since it is larger than the sum of its proper divisors (12300750183).

22261354521 is a wasteful number, since it uses less digits than its factorization.

22261354521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001280.

The product of its digits is 28800, while the sum is 33.

The spelling of 22261354521 in words is "twenty-two billion, two hundred sixty-one million, three hundred fifty-four thousand, five hundred twenty-one".