1222220122 has 8 divisors (see below), whose sum is σ = 1834108596. Its totient is φ = 610850592.

The previous prime is 1222220113. The next prime is 1222220137. The reversal of 1222220122 is 2210222221.

It can be written as a sum of positive squares in 2 ways, for example, as 1140480441 + 81739681 = 33771^2 + 9041^2 .

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 = 1222220096 and 1222220105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123793 + ... + 133300.

Almost surely, 2^1222220122 is an apocalyptic number.

1222220122 is a deficient number, since it is larger than the sum of its proper divisors (611888474).

1222220122 is a wasteful number, since it uses less digits than its factorization.

1222220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259472.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1222220122 is about 34960.2649017424. The cubic root of 1222220122 is about 1069.1774975860.

Adding to 1222220122 its reverse (2210222221), we get a palindrome (3432442343).

The spelling of 1222220122 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".