1212122201222 has 4 divisors (see below), whose sum is σ = 1818183301836. Its totient is φ = 606061100610.

The previous prime is 1212122201161. The next prime is 1212122201273. The reversal of 1212122201222 is 2221022212121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212122201194 and 1212122201203.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 303030550304 + ... + 303030550307.

It is an arithmetic number, because the mean of its divisors is an integer number (454545825459).

Almost surely, 2^{1212122201222} is an apocalyptic number.

1212122201222 is a deficient number, since it is larger than the sum of its proper divisors (606061100614).

1212122201222 is an equidigital number, since it uses as much as digits as its factorization.

1212122201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606061100613.

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

Adding to 1212122201222 its reverse (2221022212121), we get a palindrome (3433144413343).

The spelling of 1212122201222 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-two".