22145004200 has 48 divisors (see below), whose sum is σ = 56167788960. Its totient is φ = 8052728000.

The previous prime is 22145004179. The next prime is 22145004221. The reversal of 22145004200 is 240054122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22145004179) and next prime (22145004221).

It is a super-2 number, since 2×22145004200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5030756 + ... + 5035155.

It is an arithmetic number, because the mean of its divisors is an integer number (1170162270).

Almost surely, 2^22145004200 is an apocalyptic number.

22145004200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22145004200 is an abundant number, since it is smaller than the sum of its proper divisors (34022784760).

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

22145004200 is a wasteful number, since it uses less digits than its factorization.

22145004200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065938 (or 10065929 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 22145004200 its reverse (240054122), we get a palindrome (22385058322).

The spelling of 22145004200 in words is "twenty-two billion, one hundred forty-five million, four thousand, two hundred".