1221200120202 has 8 divisors (see below), whose sum is σ = 2442400240416. Its totient is φ = 407066706732.

The previous prime is 1221200120197. The next prime is 1221200120209. The reversal of 1221200120202 is 2020210021221.

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

1221200120202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1221200120209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101766676678 + ... + 101766676689.

It is an arithmetic number, because the mean of its divisors is an integer number (305300030052).

Almost surely, 2^{1221200120202} is an apocalyptic number.

1221200120202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1221200120202 is a wasteful number, since it uses less digits than its factorization.

1221200120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203533353372.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1221200120202 its reverse (2020210021221), we get a palindrome (3241410141423).

The spelling of 1221200120202 in words is "one trillion, two hundred twenty-one billion, two hundred million, one hundred twenty thousand, two hundred two".