1212201200222 has 4 divisors (see below), whose sum is σ = 1818301800336. Its totient is φ = 606100600110.

The previous prime is 1212201200183. The next prime is 1212201200233. The reversal of 1212201200222 is 2220021022121.

It is a happy number.

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 1212201200222.

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, 303050300054 + ... + 303050300057.

It is an arithmetic number, because the mean of its divisors is an integer number (454575450084).

Almost surely, 2^{1212201200222} is an apocalyptic number.

1212201200222 is a deficient number, since it is larger than the sum of its proper divisors (606100600114).

1212201200222 is an equidigital number, since it uses as much as digits as its factorization.

1212201200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606100600113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212201200222 its reverse (2220021022121), we get a palindrome (3432222222343).

The spelling of 1212201200222 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred thousand, two hundred twenty-two".