444001120220 has 24 divisors (see below), whose sum is σ = 1065602688864. Its totient is φ = 152228955456.

The previous prime is 444001120217. The next prime is 444001120223. The reversal of 444001120220 is 22021100444.

It is an interprime number because it is at equal distance from previous prime (444001120217) and next prime (444001120223).

It is a super-2 number, since 2×444001120220² (a number of 24 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 444001120192 and 444001120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444001120223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585718147 + ... + 1585718426.

It is an arithmetic number, because the mean of its divisors is an integer number (44400112036).

Almost surely, 2^444001120220 is an apocalyptic number.

It is an amenable number.

444001120220 is an abundant number, since it is smaller than the sum of its proper divisors (621601568644).

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

444001120220 is a wasteful number, since it uses less digits than its factorization.

444001120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171436589 (or 3171436587 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 444001120220 its reverse (22021100444), we get a palindrome (466022220664).

The spelling of 444001120220 in words is "four hundred forty-four billion, one million, one hundred twenty thousand, two hundred twenty".