121221021022102 has 64 divisors (see below), whose sum is σ = 197298619822080. Its totient is φ = 55692498153600.

The previous prime is 121221021022091. The next prime is 121221021022121. The reversal of 121221021022102 is 201220120122121.

121221021022102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121221021022102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1320257548 + ... + 1320349360.

It is an arithmetic number, because the mean of its divisors is an integer number (3082790934720).

Almost surely, 2^{121221021022102} is an apocalyptic number.

121221021022102 is a deficient number, since it is larger than the sum of its proper divisors (76077598799978).

121221021022102 is a wasteful number, since it uses less digits than its factorization.

121221021022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98669.

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

Adding to 121221021022102 its reverse (201220120122121), we get a palindrome (322441141144223).

The spelling of 121221021022102 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, twenty-two thousand, one hundred two".