4221212122 has 8 divisors (see below), whose sum is σ = 6426323136. Its totient is φ = 2079104412.

The previous prime is 4221212119. The next prime is 4221212129. The reversal of 4221212122 is 2212121224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4221212122.

It is not an unprimeable number, because it can be changed into a prime (4221212129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15750658 + ... + 15750925.

It is an arithmetic number, because the mean of its divisors is an integer number (803290392).

Almost surely, 2^4221212122 is an apocalyptic number.

4221212122 is a deficient number, since it is larger than the sum of its proper divisors (2205111014).

4221212122 is a wasteful number, since it uses less digits than its factorization.

4221212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31501652.

The product of its digits is 256, while the sum is 19.

The square root of 4221212122 is about 64970.8559432612. The cubic root of 4221212122 is about 1616.1402960104.

Adding to 4221212122 its reverse (2212121224), we get a palindrome (6433333346).

It can be divided in two parts, 4 and 221212122, that multiplied together give a palindrome (884848488).

The spelling of 4221212122 in words is "four billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".