1220211222122 has 8 divisors (see below), whose sum is σ = 1830451130436. Its totient is φ = 610060845312.

The previous prime is 1220211222103. The next prime is 1220211222127. The reversal of 1220211222122 is 2212221120221.

It can be written as a sum of positive squares in 2 ways, for example, as 1068182193841 + 152029028281 = 1033529^2 + 389909^2 .

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 = 1220211222094 and 1220211222103.

It is not an unprimeable number, because it can be changed into a prime (1220211222127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22348793 + ... + 22403324.

Almost surely, 2^{1220211222122} is an apocalyptic number.

1220211222122 is a deficient number, since it is larger than the sum of its proper divisors (610239908314).

1220211222122 is a wasteful number, since it uses less digits than its factorization.

1220211222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44765752.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1220211222122 its reverse (2212221120221), we get a palindrome (3432432342343).

The spelling of 1220211222122 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-two".