20212331244 has 144 divisors (see below), whose sum is σ = 55884463488. Its totient is φ = 5668357632.

The previous prime is 20212331239. The next prime is 20212331257. The reversal of 20212331244 is 44213321202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7108087 + ... + 7110929.

It is an arithmetic number, because the mean of its divisors is an integer number (388086552).

Almost surely, 2^20212331244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212331244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27942231744).

20212331244 is an abundant number, since it is smaller than the sum of its proper divisors (35672132244).

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

20212331244 is a wasteful number, since it uses less digits than its factorization.

20212331244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20212331244 its reverse (44213321202), we get a palindrome (64425652446).

The spelling of 20212331244 in words is "twenty billion, two hundred twelve million, three hundred thirty-one thousand, two hundred forty-four".