22113254521 has 8 divisors (see below), whose sum is σ = 22884095744. Its totient is φ = 21346007760.

The previous prime is 22113254491. The next prime is 22113254539. The reversal of 22113254521 is 12545231122.

It is a happy number.

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 22113254521 - 2⁵ = 22113254489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22113254521.

It is not an unprimeable number, because it can be changed into a prime (22113254591) 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, 886095 + ... + 910708.

It is an arithmetic number, because the mean of its divisors is an integer number (2860511968).

Almost surely, 2^22113254521 is an apocalyptic number.

It is an amenable number.

22113254521 is a deficient number, since it is larger than the sum of its proper divisors (770841223).

22113254521 is a wasteful number, since it uses less digits than its factorization.

22113254521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797231.

The product of its digits is 4800, while the sum is 28.

Adding to 22113254521 its reverse (12545231122), we get a palindrome (34658485643).

It can be divided in two parts, 221132 and 54521, that added together give a triangular number (275653 = T₇₄₂).

The spelling of 22113254521 in words is "twenty-two billion, one hundred thirteen million, two hundred fifty-four thousand, five hundred twenty-one".