20211002244 has 72 divisors (see below), whose sum is σ = 54550047552. Its totient is φ = 6294214080.

The previous prime is 20211002243. The next prime is 20211002261. The reversal of 20211002244 is 44220011202.

It is a super-2 number, since 2×20211002244² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20211002243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248227 + ... + 319434.

Almost surely, 2^20211002244 is an apocalyptic number.

It is an amenable number.

20211002244 is an abundant number, since it is smaller than the sum of its proper divisors (34339045308).

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

20211002244 is a wasteful number, since it uses less digits than its factorization.

20211002244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567737 (or 567732 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20211002244 its reverse (44220011202), we get a palindrome (64431013446).

The spelling of 20211002244 in words is "twenty billion, two hundred eleven million, two thousand, two hundred forty-four".