22140421002 has 96 divisors (see below), whose sum is σ = 58093656192. Its totient is φ = 5949130752.

The previous prime is 22140421001. The next prime is 22140421013. The reversal of 22140421002 is 20012404122.

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 (22140421001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3481858 + ... + 3488210.

It is an arithmetic number, because the mean of its divisors is an integer number (605142252).

Almost surely, 2^22140421002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22140421002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29046828096).

22140421002 is an abundant number, since it is smaller than the sum of its proper divisors (35953235190).

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

22140421002 is a wasteful number, since it uses less digits than its factorization.

22140421002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012 (or 8009 counting only the distinct ones).

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

Adding to 22140421002 its reverse (20012404122), we get a palindrome (42152825124).

The spelling of 22140421002 in words is "twenty-two billion, one hundred forty million, four hundred twenty-one thousand, two".