444100220322021 has 16 divisors (see below), whose sum is σ = 673973234094720. Its totient is φ = 288845671753440.

The previous prime is 444100220321969. The next prime is 444100220322023. The reversal of 444100220322021 is 120223022001444.

It is a happy number.

444100220322021 is a `hidden beast` number, since 4 + 4 + 410 + 0 + 2 + 2 + 0 + 3 + 220 + 21 = 666.

It is not a de Polignac number, because 444100220322021 - 2⁹ = 444100220321509 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444100220322023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200587270945 + ... + 200587273158.

It is an arithmetic number, because the mean of its divisors is an integer number (42123327130920).

Almost surely, 2^{444100220322021} is an apocalyptic number.

444100220322021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

444100220322021 is a deficient number, since it is larger than the sum of its proper divisors (229873013772699).

444100220322021 is a wasteful number, since it uses less digits than its factorization.

444100220322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401174544153 (or 401174544147 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 444100220322021 its reverse (120223022001444), we get a palindrome (564323242323465).

The spelling of 444100220322021 in words is "four hundred forty-four trillion, one hundred billion, two hundred twenty million, three hundred twenty-two thousand, twenty-one".