121221021210002 has 64 divisors (see below), whose sum is σ = 219098708801280. Its totient is φ = 49198412600064.

The previous prime is 121221021209963. The next prime is 121221021210071. The reversal of 121221021210002 is 200012120122121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67170908 + ... + 68951960.

It is an arithmetic number, because the mean of its divisors is an integer number (3423417325020).

Almost surely, 2^{121221021210002} is an apocalyptic number.

121221021210002 is a deficient number, since it is larger than the sum of its proper divisors (97877687591278).

121221021210002 is a wasteful number, since it uses less digits than its factorization.

121221021210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784307.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121221021210002 its reverse (200012120122121), we get a palindrome (321233141332123).

The spelling of 121221021210002 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, two".