22224121530 has 32 divisors (see below), whose sum is σ = 57440807424. Its totient is φ = 5470552896.

The previous prime is 22224121523. The next prime is 22224121531. The reversal of 22224121530 is 3512142222.

It is a self number, because there is not a number n which added to its sum of digits gives 22224121530.

It is not an unprimeable number, because it can be changed into a prime (22224121531) 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, 28492074 + ... + 28492853.

It is an arithmetic number, because the mean of its divisors is an integer number (1795025232).

Almost surely, 2^22224121530 is an apocalyptic number.

22224121530 is an abundant number, since it is smaller than the sum of its proper divisors (35216685894).

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

22224121530 is a wasteful number, since it uses less digits than its factorization.

22224121530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56984950.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 22224121530 its reverse (3512142222), we get a palindrome (25736263752).

The spelling of 22224121530 in words is "twenty-two billion, two hundred twenty-four million, one hundred twenty-one thousand, five hundred thirty".