21002122022184 has 48 divisors (see below), whose sum is σ = 58987441487520. Its totient is φ = 7000707340080.

The previous prime is 21002122022183. The next prime is 21002122022207. The reversal of 21002122022184 is 48122022120012.

21002122022184 is a `hidden beast` number, since 210 + 0 + 2 + 1 + 220 + 221 + 8 + 4 = 666.

It is a super-2 number, since 2×21002122022184² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21002122022183) by changing a digit.

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, 5401778412 + ... + 5401782299.

It is an arithmetic number, because the mean of its divisors is an integer number (1228905030990).

Almost surely, 2^{21002122022184} is an apocalyptic number.

21002122022184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21002122022184 is an abundant number, since it is smaller than the sum of its proper divisors (37985319465336).

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

21002122022184 is a wasteful number, since it uses less digits than its factorization.

21002122022184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803560732 (or 10803560716 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 21002122022184 its reverse (48122022120012), we get a palindrome (69124144142196).

The spelling of 21002122022184 in words is "twenty-one trillion, two billion, one hundred twenty-two million, twenty-two thousand, one hundred eighty-four".