2201021000444 has 24 divisors (see below), whose sum is σ = 4495702471680. Its totient is φ = 923224613616.

The previous prime is 2201021000429. The next prime is 2201021000447. The reversal of 2201021000444 is 4440001201022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201021000447) 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 7 ways as a sum of consecutive naturals, for example, 836252864 + ... + 836255495.

It is an arithmetic number, because the mean of its divisors is an integer number (187320936320).

Almost surely, 2^{2201021000444} is an apocalyptic number.

It is an amenable number.

2201021000444 is an abundant number, since it is smaller than the sum of its proper divisors (2294681471236).

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

2201021000444 is a wasteful number, since it uses less digits than its factorization.

2201021000444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672508417 (or 1672508415 counting only the distinct ones).

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

Adding to 2201021000444 its reverse (4440001201022), we get a palindrome (6641022201466).

The spelling of 2201021000444 in words is "two trillion, two hundred one billion, twenty-one million, four hundred forty-four", and thus it is an aban number.