21044414222000 has 160 divisors (see below), whose sum is σ = 54891180489600. Its totient is φ = 7757267481600.

The previous prime is 21044414221991. The next prime is 21044414222003. The reversal of 21044414222000 is 22241444012.

It is a happy number.

It is a super-3 number, since 3×21044414222000³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (21044414222003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14898374 + ... + 16249626.

It is an arithmetic number, because the mean of its divisors is an integer number (343069878060).

Almost surely, 2^{21044414222000} is an apocalyptic number.

21044414222000 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 21044414222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27445590244800).

21044414222000 is an abundant number, since it is smaller than the sum of its proper divisors (33846766267600).

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

21044414222000 is a wasteful number, since it uses less digits than its factorization.

21044414222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351888 (or 1351872 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21044414222000 its reverse (22241444012), we get a palindrome (21066655666012).

The spelling of 21044414222000 in words is "twenty-one trillion, forty-four billion, four hundred fourteen million, two hundred twenty-two thousand".