20130021222 has 16 divisors (see below), whose sum is σ = 42010479360. Its totient is φ = 6418267592.

The previous prime is 20130021217. The next prime is 20130021229. The reversal of 20130021222 is 22212003102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130021229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72934722 + ... + 72934997.

It is an arithmetic number, because the mean of its divisors is an integer number (2625654960).

Almost surely, 2^20130021222 is an apocalyptic number.

20130021222 is an abundant number, since it is smaller than the sum of its proper divisors (21880458138).

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

20130021222 is a wasteful number, since it uses less digits than its factorization.

20130021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145869747.

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

Adding to 20130021222 its reverse (22212003102), we get a palindrome (42342024324).

The spelling of 20130021222 in words is "twenty billion, one hundred thirty million, twenty-one thousand, two hundred twenty-two".