212222230242 has 64 divisors (see below), whose sum is σ = 471415317120. Its totient is φ = 63155635200.

The previous prime is 212222230211. The next prime is 212222230267. The reversal of 212222230242 is 242032222212.

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, 682392 + ... + 943452.

It is an arithmetic number, because the mean of its divisors is an integer number (7365864330).

Almost surely, 2^212222230242 is an apocalyptic number.

212222230242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222230242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235707658560).

212222230242 is an abundant number, since it is smaller than the sum of its proper divisors (259193086878).

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

212222230242 is a wasteful number, since it uses less digits than its factorization.

212222230242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261299.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212222230242 its reverse (242032222212), we get a palindrome (454254452454).

The spelling of 212222230242 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred thirty thousand, two hundred forty-two".