1212211122202 has 8 divisors (see below), whose sum is σ = 1818357779700. Its totient is φ = 606091862304.

The previous prime is 1212211122193. The next prime is 1212211122257. The reversal of 1212211122202 is 2022211122121.

It can be written as a sum of positive squares in 2 ways, for example, as 1188036780841 + 24174341361 = 1089971^2 + 155481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1212211122202.

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 in 3 ways as a sum of consecutive naturals, for example, 6738427 + ... + 6915982.

Almost surely, 2^{1212211122202} is an apocalyptic number.

1212211122202 is a deficient number, since it is larger than the sum of its proper divisors (606146657498).

1212211122202 is a wasteful number, since it uses less digits than its factorization.

1212211122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13698800.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212211122202 its reverse (2022211122121), we get a palindrome (3234422244323).

The spelling of 1212211122202 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, two hundred two".