22121452524 has 24 divisors (see below), whose sum is σ = 51631333488. Its totient is φ = 7371730240.

The previous prime is 22121452523. The next prime is 22121452531. The reversal of 22121452524 is 42525412122.

It is a junction number, because it is equal to n+sod(n) for n = 22121452491 and 22121452500.

It is not an unprimeable number, because it can be changed into a prime (22121452523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216447 + ... + 301814.

It is an arithmetic number, because the mean of its divisors is an integer number (2151305562).

Almost surely, 2^22121452524 is an apocalyptic number.

It is an amenable number.

22121452524 is an abundant number, since it is smaller than the sum of its proper divisors (29509880964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121452524 is a wasteful number, since it uses less digits than its factorization.

22121452524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521825 (or 521823 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

Adding to 22121452524 its reverse (42525412122), we get a palindrome (64646864646).

The spelling of 22121452524 in words is "twenty-two billion, one hundred twenty-one million, four hundred fifty-two thousand, five hundred twenty-four".