22145412300 has 144 divisors (see below), whose sum is σ = 70518736512. Its totient is φ = 5320985600.

The previous prime is 22145412281. The next prime is 22145412313. The reversal of 22145412300 is 321454122.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343207 + ... + 402593.

It is an arithmetic number, because the mean of its divisors is an integer number (489713448).

Almost surely, 2^22145412300 is an apocalyptic number.

22145412300 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 22145412300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35259368256).

22145412300 is an abundant number, since it is smaller than the sum of its proper divisors (48373324212).

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

22145412300 is a wasteful number, since it uses less digits than its factorization.

22145412300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59528 (or 59521 counting only the distinct ones).

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

Adding to 22145412300 its reverse (321454122), we get a palindrome (22466866422).

The spelling of 22145412300 in words is "twenty-two billion, one hundred forty-five million, four hundred twelve thousand, three hundred".