22212212202 has 80 divisors (see below), whose sum is σ = 50421440520. Its totient is φ = 7307739648.

The previous prime is 22212212177. The next prime is 22212212203. The reversal of 22212212202 is 20221221222.

22212212202 is a `hidden beast` number, since 2 + 221 + 221 + 220 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12922915041 + 9289297161 = 113679^2 + 96381^2 .

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 (22212212203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11144118 + ... + 11146110.

Almost surely, 2^22212212202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212212202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25210720260).

22212212202 is an abundant number, since it is smaller than the sum of its proper divisors (28209228318).

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

22212212202 is a wasteful number, since it uses less digits than its factorization.

22212212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2860 counting only the distinct ones).

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

Adding to 22212212202 its reverse (20221221222), we get a palindrome (42433433424).

It can be divided in two parts, 2221221220 and 2, that added together give a palindrome (2221221222).

The spelling of 22212212202 in words is "twenty-two billion, two hundred twelve million, two hundred twelve thousand, two hundred two".