1212120011222 has 4 divisors (see below), whose sum is σ = 1818180016836. Its totient is φ = 606060005610.

The previous prime is 1212120011149. The next prime is 1212120011279. The reversal of 1212120011222 is 2221100212121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212120011222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303030002804 + ... + 303030002807.

It is an arithmetic number, because the mean of its divisors is an integer number (454545004209).

Almost surely, 2^{1212120011222} is an apocalyptic number.

1212120011222 is a deficient number, since it is larger than the sum of its proper divisors (606060005614).

1212120011222 is an equidigital number, since it uses as much as digits as its factorization.

1212120011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606060005613.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212120011222 its reverse (2221100212121), we get a palindrome (3433220223343).

The spelling of 1212120011222 in words is "one trillion, two hundred twelve billion, one hundred twenty million, eleven thousand, two hundred twenty-two".