1212110001222 has 16 divisors (see below), whose sum is σ = 2424386322432. Its totient is φ = 404008947080.

The previous prime is 1212110001217. The next prime is 1212110001229. The reversal of 1212110001222 is 2221000112121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212110001229) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6835158 + ... + 7010249.

It is an arithmetic number, because the mean of its divisors is an integer number (151524145152).

Almost surely, 2^{1212110001222} is an apocalyptic number.

1212110001222 is an abundant number, since it is smaller than the sum of its proper divisors (1212276321210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212110001222 is a wasteful number, since it uses less digits than its factorization.

1212110001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13860003.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212110001222 its reverse (2221000112121), we get a palindrome (3433110113343).

The spelling of 1212110001222 in words is "one trillion, two hundred twelve billion, one hundred ten million, one thousand, two hundred twenty-two".