121021201212102 has 12 divisors (see below), whose sum is σ = 262212602626260. Its totient is φ = 40340400404028.

The previous prime is 121021201212011. The next prime is 121021201212113. The reversal of 121021201212102 is 201212102120121.

121021201212102 is a `hidden beast` number, since 1 + 210 + 2 + 120 + 121 + 210 + 2 = 666.

It is a super-2 number, since 2×121021201212102² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6723400067339 = 121021201212102 / (1 + 2 + 1 + 0 + 2 + 1 + 2 + 0 + 1 + 2 + 1 + 2 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3361700033652 + ... + 3361700033687.

It is an arithmetic number, because the mean of its divisors is an integer number (21851050218855).

Almost surely, 2^{121021201212102} is an apocalyptic number.

121021201212102 is an abundant number, since it is smaller than the sum of its proper divisors (141191401414158).

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

121021201212102 is a wasteful number, since it uses less digits than its factorization.

121021201212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723400067347 (or 6723400067344 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121021201212102 its reverse (201212102120121), we get a palindrome (322233303332223).

The spelling of 121021201212102 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred two".