22020010002 has 64 divisors (see below), whose sum is σ = 52296243840. Its totient is φ = 6843644928.

The previous prime is 22020009989. The next prime is 22020010003. The reversal of 22020010002 is 20001002022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22020010003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13863 + ... + 210314.

It is an arithmetic number, because the mean of its divisors is an integer number (817128810).

Almost surely, 2^22020010002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020010002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26148121920).

22020010002 is an abundant number, since it is smaller than the sum of its proper divisors (30276233838).

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

22020010002 is a wasteful number, since it uses less digits than its factorization.

22020010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224312 (or 224306 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22020010002 its reverse (20001002022), we get a palindrome (42021012024).

The spelling of 22020010002 in words is "twenty-two billion, twenty million, ten thousand, two".