7222220122 has 8 divisors (see below), whose sum is σ = 11666663316. Its totient is φ = 3333332352.

The previous prime is 7222220063. The next prime is 7222220123. The reversal of 7222220122 is 2210222227.

It can be written as a sum of positive squares in 2 ways, for example, as 7034009161 + 188210961 = 83869^2 + 13719^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7222220093 and 7222220102.

It is not an unprimeable number, because it can be changed into a prime (7222220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138888823 + ... + 138888874.

Almost surely, 2^7222220122 is an apocalyptic number.

7222220122 is a deficient number, since it is larger than the sum of its proper divisors (4444443194).

7222220122 is a wasteful number, since it uses less digits than its factorization.

7222220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277777712.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 7222220122 is about 84983.6462032549. The cubic root of 7222220122 is about 1932.9631451811.

Adding to 7222220122 its reverse (2210222227), we get a palindrome (9432442349).

The spelling of 7222220122 in words is "seven billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".