1212112122202 has 4 divisors (see below), whose sum is σ = 1818168183306. Its totient is φ = 606056061100.

The previous prime is 1212112122181. The next prime is 1212112122229. The reversal of 1212112122202 is 2022212112121.

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., 1134393276241 + 77718845961 = 1065079^2 + 278781^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212112122202.

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, 303028030549 + ... + 303028030552.

Almost surely, 2^{1212112122202} is an apocalyptic number.

1212112122202 is a deficient number, since it is larger than the sum of its proper divisors (606056061104).

1212112122202 is an equidigital number, since it uses as much as digits as its factorization.

1212112122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606056061103.

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

Adding to 1212112122202 its reverse (2022212112121), we get a palindrome (3234324234323).

The spelling of 1212112122202 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-two thousand, two hundred two".