1222121122106 has 4 divisors (see below), whose sum is σ = 1833181683162. Its totient is φ = 611060561052.

The previous prime is 1222121122087. The next prime is 1222121122129. The reversal of 1222121122106 is 6012211212221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 969257971081 + 252863151025 = 984509^2 + 502855^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 305530280525 + ... + 305530280528.

Almost surely, 2^{1222121122106} is an apocalyptic number.

1222121122106 is a deficient number, since it is larger than the sum of its proper divisors (611060561056).

1222121122106 is an equidigital number, since it uses as much as digits as its factorization.

1222121122106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611060561055.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 1222121122106 its reverse (6012211212221), we get a palindrome (7234332334327).

The spelling of 1222121122106 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred six".