22321021002 has 64 divisors (see below), whose sum is σ = 53327683584. Its totient is φ = 6089846400.

The previous prime is 22321020971. The next prime is 22321021013. The reversal of 22321021002 is 20012012322.

It is a happy number.

It is a super-3 number, since 3×22321021002³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 561343 + ... + 599789.

It is an arithmetic number, because the mean of its divisors is an integer number (833245056).

Almost surely, 2^22321021002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22321021002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26663841792).

22321021002 is an abundant number, since it is smaller than the sum of its proper divisors (31006662582).

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

22321021002 is a wasteful number, since it uses less digits than its factorization.

22321021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39083.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22321021002 its reverse (20012012322), we get a palindrome (42333033324).

The spelling of 22321021002 in words is "twenty-two billion, three hundred twenty-one million, twenty-one thousand, two".