1212221220202 has 8 divisors (see below), whose sum is σ = 1818341100000. Its totient is φ = 606107520204.

The previous prime is 1212221220193. The next prime is 1212221220241. The reversal of 1212221220202 is 2020221222121.

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 1212221220202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018702 + ... + 1860697.

It is an arithmetic number, because the mean of its divisors is an integer number (227292637500).

Almost surely, 2^{1212221220202} is an apocalyptic number.

1212221220202 is a deficient number, since it is larger than the sum of its proper divisors (606119879798).

1212221220202 is a wasteful number, since it uses less digits than its factorization.

1212221220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089900.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212221220202 its reverse (2020221222121), we get a palindrome (3232442442323).

The spelling of 1212221220202 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".