22420042500 has 120 divisors (see below), whose sum is σ = 66348036832. Its totient is φ = 5889312000.

The previous prime is 22420042481. The next prime is 22420042517. The reversal of 22420042500 is 524002422.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 480192 + ... + 524808.

Almost surely, 2^22420042500 is an apocalyptic number.

22420042500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22420042500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33174018416).

22420042500 is an abundant number, since it is smaller than the sum of its proper divisors (43927994332).

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

22420042500 is a wasteful number, since it uses less digits than its factorization.

22420042500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44711 (or 44694 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 22420042500 its reverse (524002422), we get a palindrome (22944044922).

The spelling of 22420042500 in words is "twenty-two billion, four hundred twenty million, forty-two thousand, five hundred".